The purpose of virtual currency training

1.

mining is a nickname for the exploration method of acquiring bitcoin. Because of its working principle is very similar to mining minerals, so named. In addition, bitcoin explorers who do mining work are also known as miners

bitcoin network generates new bitcoin through "mining". In essence, the so-called "mining" is to use computers to solve a complex mathematical problem to ensure the consistency of bitcoin network distributed accounting system

bitcoin network will automatically adjust the difficulty of mathematical problems, so that the whole network can get a qualified answer about every 10 minutes

then the bitcoin network will generate a certain amount of bitcoin as a reward to reward the person who gets the answer

extended data:

to be a miner, just "mine" bitcoin and search for 64 bit numbers by computer. By repeatedly decrypting with a computer, it competes with other gold miners to provide the number needed for the bitcoin network

if the computer can successfully create a set of numbers, it will get 25 bitcoins. Bitcoin is decentralized. It needs to create a fixed number of bitcoins per unit of computing time. It can get 25 bitcoins every 10 minutes

by 2140, the upper limit of bitcoin in circulation will reach 21 million. In other words, bitcoin system can be self-sufficient, which can be translated into coding to resist inflation and prevent others from sabotaging< br />

2. Learning experience of attending the counselor training class of Ministry of ecation

Wang

garrison

2009
year
4
month
19
day -
4
month
30
day, I had the honor to participate in the second post training class of College Counselors in Jilin Province,
sincerely thank the school for creating conditions for me,
provides me with the opportunity to learn from senior leaders and experts in this field, and creates a platform for me and other college counselors to communicate with each other<

this training course is the only one with the highest level of experts, the longest learning time, the most complete learning
content and the most activities I have participated in since I came to China.
it has benefited me a lot< The experts of the training course are Xu Yanguo, director of the ideological and Political Work Department of the Ministry of ecation,
Weng, Deputy Secretary General of Shanghai municipal government,
tie Hui,
professor of China Youth College of political science,
doctoral supervisor,
Lu Shizhen, President of the Youth Development Research Institute of China Youth College of political science,
director of China Mental Health Association, and
fan Fumin, chairman of College Students' psychological counseling professional committee,
Qing Dynasty,
professor and doctoral supervisor of China University,
Bing Zheng, professor and doctoral supervisor of Jilin Academy of Social Sciences,
Secretary General of China Ethics Society,
director of ethics and morality research center of Renmin University of China,
professor of Renmin University of China,
Wu Qiantao, professor and doctoral supervisor of Jilin University Gao Wenxin, doctoral supervisor and assistant to the president, Zhang Yanyan, deputy secretary of the Party committee of Peking University, and other senior leaders and ecation experts on the ideological and political ecation front< The contents of the study include the leaders of the general headquarters of Ideological and political work of our students explaining to us the role orientation of today's counselors, the national policy for counselors, the growth and outlet of today's counselors, etc; There are senior experts from the ecational front of colleges and universities to teach us the characteristics of contemporary youth and the methods of mental health ecation< There are some current
famous leaders of student affairs in Colleges and universities who teach us the ideological and political work in typical colleges and universities
there is an introction about the student work of the key universities of the Ministry of ecation
there is an outstanding representative of counselors working in the front line like us, the national excellent assistant director Li Qin
the training course enables us to receive all-round training in all aspects< During the training period,
we also participated in two forums and two visits to Northeast Normal University, which enhanced our communication and knowledge< Through the training, I have the following experiences, which are reported as follows:

first, I fully realized the importance of counselors' work, understood the relevant background and policies of the state in the ideological and political work in Colleges and universities, and was encouraged

Xu Yanguo, director of the ideological and Political Work Department of the Ministry of ecation, pointed out in the training, The team of counselors is the personal guard of the party and the state, and the task of counselors is to train qualified socialist builders and reliable successors<
"it's easy to get a good teacher,
it's hard to get a good teacher"
,
this sentence puts the role of counselors in the work of ecating people in a lofty position,
as a counselor, we should not only teach students to survive,
but also teach students to be human beings,
it's extremely noble to be a tutor and good teacher< As a teacher who has direct contact with students' study and life,
counselors' speech and behavior not only affect the formation of students' Outlook on life,
world outlook,
values,
but also affect the growth of students< Therefore,
college counselors must fully understand their responsibilities,
further enhance their sense of honor,
sense of responsibility and historical mission,
take on the sacred mission of cultivating excellent talents for the party and the country,
promoting the prosperity and development of the motherland< At the same time, director Xu pointed out that in order to thoroughly implement the spirit of the opinions of the CPC Central Committee and the State Council on Further Strengthening and improving the ideological and political ecation of college students and effectively strengthen the construction of college counselors,
the Ministry of ecation formulated the
regulations on the construction of college counselors on May 20, 2006, which put forward the orientation of college counselors. College counselors are both teachers and administrators, organizers, implementers and instructors of students' daily ideological and political ecation,
they are intimate friends and life mentors for the healthy growth of college students< According to the regulations, counselors should account for a certain proportion in the evaluation and employment of university teachers, the evaluation criteria should be independent, the evaluation criteria should be in line with the actual work of counselors, and the achievement identification should be flexible< Director Xu pointed out that in the future, the Ministry of ecation should organize regular training for counselors in combination with the improvement of their comprehensive quality, and organize the selection of national excellent counselors, so as to create a good platform and environment for the growth of counselors< In combination with the Ministry of ecation '
24
orders, director Xu showed us the importance, background and future development of counselors' work.
the Ministry of ecation's training for college counselors and the training for college counselors in the whole province organized by the research base fully illustrated the importance that the state and higher ecation departments attach to the work of counselors and students,
feel much more drum
dance, more energetic< Second, we should fully realize that we should improve our ability and quality to adapt to the student work in the new period. How to meet these new expectations and requirements and solve the problems existing in the current
student work is a problem that must be faced up to and urgently needed to be solved in order to do a good job of College Counselors in the new period< Through the explanation and teaching of relevant leaders and experts in the training process,
I deeply realize that the counselors in the new period are not the former nanny counselors,
fire brigade counselors and management counselors<
contemporary counselors should understand the importance of their work,
deeply understand and master the knowledge of mental health,
be familiar with the characteristics of the working group,
implement the party's major policies into the student work,
be an expert counselor,
only in this way can
have the ecational effect on students. After listening to the reports of experts, I deeply realize that
I have many shortcomings in student work
these deficiencies include,
insufficient cognition of students,
insufficient level and structure of self-knowledge,
insufficient ability to solve students' psychological problems,
insufficient ability to keep pace with the times and do a good job in students' work,
insufficient theoretical literacy. In the future work, we must face up to these shortcomings,
be determined, planned and step-by-step to supplement and improve, make up for the deficiencies, improve their ability and quality,
strive to be a qualified college counselor,
adapt to the needs of the post,
meet the new requirements and expectations of the majority of students in the new period and new stage

three, fully aware of the advanced nature of the instructor's model, and realize that there is a big gap between

training course. We invite the national excellent counsellor and the national excellent student Huang Lai daughter's counsellor
ring the training, experts have repeatedly mentioned the last national excellent counselors
Fudan University "forgive me", and I was deeply impressed by the touching deeds of the two excellent counselors<

1
, to be a conscientious person

"words of inclusion" is the epitome of the work of an ordinary college counselor, her behavior is very ordinary,
very ordinary,
it can be said that as long as a counselor who has been with students for four years, she will experience the trivial work of inclusion,
as long as she has a little sympathy and a little sense of responsibility
responsible teachers will sincerely pay for the students,
every senior
school counselor has a certain writing ability at the same time,
but why is there only one
inclusive heart language

only one inclusion? It shows that we are not living with our heart,
working with our heart
of course,
we can say that there are too many
trivial tasks that make us have no time,
especially when there are large-scale activities or important periods,
we don't even have time to sleep,
but we can't do it every day, every week, every month,
including diary,
I believe she doesn't have so much time to write diary,
what she wrote was weekly notes
this shows that inclusion is a person who has a heart of
and a heart of
life, he will certainly have a heart of work,
in order to serve the students well in his work,
lead the way<

2
, be a person without regret and selfless dedication

Li Qin put forward his theory of paratroopers in his report: if a person asks a paratrooper, you may be surrounded and arrested by the enemy as soon as you fly,
aren't you afraid? The paratrooper replied:
we paratroopers were born surrounded

- we want to be people who have no regrets,
we want to be people who give selflessly
I think it's very vivid and appropriate for counselors to
talk,
we should agree< The story of Li Qin and his classmates helping Huang Lainu and his father selflessly in his report has infected everyone,
this kind of help has surpassed the level of teachers and students,
and even the level of relatives, which shows that he has fully understood and applied the theory of paratroopers to his work practice.

3. virtual currency swindles people under the banner of this country

4. The equipment on 054A is all made in China. The design basis of 054 frigate may come from the f-16u frigate used for export. Compared with the previous domestic Jiangwei class frigates, the 054 frigate is more concise and avant-garde in appearance, completely getting rid of the impression that the superstructure of Jianghu class and Jiangwei class frigates is scattered and low. Compared with the Chinese Navy's new 052B / C missile destroyer, the new 054 frigate has a more concise outline. It adopts a stepped superstructure integrated with the ship's side. The bridge, tower shaped front mast and composite rear mast / chimney structure are all inclined (and the inclined angle is generally quite obvious), avoiding acute angle and complex structure, Some equipment on the surface of the warship, such as boat crane, is also covered by bulwarks, which makes the stealth design of 054 frigate close to the advanced level of the West. The displacement and hull of 054 frigate is much larger than that of Jiangwei class II frigate with a displacement of 2250 tons. It has better ocean navigation ability and can accompany the ocean fleet. However, after the first two warships of 054 frigate were built and launched, it can be inferred that 054 frigate is still a kind of transitional warship from the eight joint haihongqi 7 air defense missile launcher. Starting from the third ship, the second batch of 054 frigates have made many significant improvements in design and equipment, among which the biggest improvement is the addition of domestic vertical air defense missile launcher, which greatly strengthens the air defense capability of this type of frigates. The improved 054 frigate is the present 054A stealth frigate. 054A stealth frigate is also a new type of surface combat ship equipped by the Chinese Navy, and a few of them can build more than two, which shows that its design has become mature. With the improvement of comprehensive operational performance and low cost, 054A frigate graally plays the role of general destroyer in Chinese fleet
while China is striving to narrow the gap with the world's naval power, Japan, a former naval power and China's neighbor, has built a strong 88 fleet as early as the 1980s to meet its demand for "1000 nautical miles ocean escort". Based on five general purpose destroyers, two air defense destroyers and one helicopter destroyer, this fleet has strong comprehensive combat capability. With the development of the times, Japan's newly-built "King Kong" class and "aitao" class air defense destroyers and "Gaobo" class destroyers have been serving in the sea one after another, and Japan's sea has formed a more sophisticated 90 fleet accordingly[ Overall layout and stealth capability first of all, 054A stealth frigate: Based on the data provided by all parties, it is assumed that the data should be 3600 tons of standard displacement and 4000 tons of full load displacement (there is also a saying that 3900 tons of target displacement and 4500 tons of full load displacement). The ship is 134m long, 16m wide, 5m draught, and the aspect ratio is close to 8.6. Maximum speed 27 knots, 18 knots, enrance 3800 nautical miles, 190 crew
in terms of overall situation, since the Chinese Navy had a lot of exchanges with the European navies in the 1980s, especially the French, Italian and British navies, and was deeply influenced by their design, when Jiangwei class frigates appeared, they inadvertently revealed some traces of the design of Western ships, When the 054 frigate appeared, it obviously borrowed some of the body designs of some French "Lafayette" frigates: popular flying shear bow, freeboard high and floating out, square stern linear structure, and small aspect ratio. Its bow is high (the height is similar to that of Russian 956 "modern" class destroyer) and its transverse section is deep V-shaped, which can well prevent buffeting and waves. Its excellent hull line shape, relatively small aspect ratio and reasonable use of fin stabilizer can ensure its seakeeping to meet the needs of ocean navigation, which has been confirmed by the second and third batch of naval escort operations to the Persian Gulf
in terms of stealth design, the effect of Lafite class is also obvious, with freeboard camber of 10 °～ twenty °， Superstructure sidewall inclination 7 °～ fifteen °， Both of them are combined into an organic whole by the corner line which is almost used to pass through the whole ship. By making its cross section present a rhombic structure, the direction of the radar radiation wave can be changed, the scattering space can be reced, the echo intensity can be reced, and the radar reflection cross section can be reced. At the same time, the corner line starts from the back part of the wall of the ship's bow side, which is strongly floating, and passes through the shielding net outside the space of the lifeboat on the side side of the midship, which is flush with the helicopter platform. Its purpose is to cover the chain winch, cable pile, windlass and other equipment on the bow deck which is not concive to radar stealth, and the design idea of deliberately recing the target signal characteristics runs through the design. In addition, radar absorbing coating is used to further improve radar stealth performance. In terms of acoustic stealth treatment, diesel engines and generators use double-layer raft devices to rece vibration and noise, and the use of new low-noise 5 large side slope low-speed propeller also strengthens this purpose. In the infrared stealth processing, its huge chimney shows that it has spray cooling facilities to suppress infrared radiation
let's look at the "high wave" class: 151 meters in length, 17.4 meters in width and 5.3 meters in draft. The standard displacement is 4650 tons, and the full load displacement is 5500 tons. The ratio of length to width is 8.88, the maximum speed is 30 knots, carrying 175 people. In addition, the layout of engine room is similar. The differences are mainly reflected in the bridge, helicopter hangar and chimney. The ship has excellent ocean navigation quality to ensure that it can normally use oqr-2 low-frequency towed sonar to carry out anti submarine operation in bad sea conditions
in the stealth design, the "high wave" class also uses two methods: shape modification and absorbing coating (such as the use on the mast) to achieve the goal of weakening the radar reflection. Its hull is 8 ° The cross section is V-shaped e to the outward inclination of the cross section; The superstructure should be designed to eliminate the radar reflection as much as possible; In terms of infrared and noise stealth, relevant infrared suppression devices, shock absorbing floating rafts, low-noise and highly skewed propellers, and aerosol noise rection systems are also adopted to improve the comprehensive stealth capability. The overall stealth effect has reached the world advanced level[ Power system in power system: 054A is also influenced by Lafite class, and adopts CODAD power propulsion mode, which is composed of four pilstek 16pa6v280stc diesel engines proced by Shaanxi Diesel according to the license, with a single maximum power of 6400kw and a total power rate of 25600kw. Two new 5-blade adjustable pitch and large pitch low speed propellers are driven by two shafts. The design of the air intake in the lower front of the chimney is similar to Burke's style. The large size of the chimney indicates that it has a spray cooling facility to suppress the infrared radiation. In addition, there are two mtu-396 diesel generator sets with power of 1500kW, reaching the same level as "high wave". Don't underestimate this change. One of the reasons why the modernization of Chinese Navy destroyers and frigates was very small in the past was that the power of the power station was very small (400KW), which could only meet the power supply demand of the electromechanical, electronic and weapon equipment on board when they were newly built. The reserve power could not meet the needs of the newly improved equipment on board. As a result, the modernization was only related to communication and communication In the field of electronic warfare and other systems
many people have different opinions on the use of CODAD power mode for 054A. In fact, the power mode of CODAD first appeared on the French Navy's Casar class air defense missile destroyer. Its four high-power pierstick 18pa6v280btc diesel engines can output 31752kw of total power, so that the 5000 ton Casar can reach 29.5 knots. It was a good area air defense ship for fuhee and later Charles de Gaulle (CVN). Later, the Lafite class adopted the CODAD power unit composed of four 16pa6v280stc diesel engines. In fact, Lafite class still exists in the formation of French aircraft carriers. Considering that the output of domestic gas turbine can not meet the Navy's needs at present, the first thing is to ensure the demand of domestic large ocean destroyer. At the same time, the technical support department of the Chinese navy has rich experience and complete technical means for long-term maintenance of such power plants. Therefore, it is the most appropriate project to use advanced and mature high-power medium and high-speed diesel engine as the main power device of medium-sized warship
rihai has fully implemented COGAG since it was on the "Chaowu" class general destroyer. At that time, it was referring to the model of dd-963 class of the United States. Considering that its full capacity is less than 4200 tons, which is almost half of the latter, rihai chose four "Spey" SMIA gas turbines from the traditional supplier R.R., with a total power of 39100kw. It can solve the contradiction between the quiet environment of high-speed pursuit of nuclear submarine and low-speed towed linear array sonar. When the new "village rain" class was built later, because the full discharge increased to 5100 tons, more power was needed to ensure that the speed could reach 30 knots. Therefore, two of the main engines were replaced by lm2500 with higher power, in order to keep the original characteristics in the case of increased displacement. The "high wave" class basically "copies" such a mode: four main engines are installed in two power cabins respectively, and the general layout of front and rear port and starboard is adopted. The first engine room is arranged on the front port side, with No.1 and No.2 engines built in to drive the left propulsion shaft. The second engine room is arranged on the starboard side of the rear, with No. 3 and No. 4 engines built in to drive the right propulsion shaft. 1. Unit 4 is lm2500 proced by GE; 2. Unit 3 is sm1c proced by R.R. The advantages of this arrangement are: first, it improves the anti damage ability of the aircraft; second, as a cruiser, sm1c has lower fuel consumption and noise than lm2500; its navigation quietness and enrance are better than "Chaowu"; third, the total power is 44400kw when the vehicle is combined to ensure that the maximum speed is 30 knots, meeting the needs of pursuing submarines[ [editor's note] the antisubmarine capability is the same as that of the "high wave" class. In the general layout and power plant selection, the 054A attaches great importance to the quiet environment required for the low speed towed linear array sonar's submarine search time outline, and the corresponding development work is carried out, and the goal is basically achieved through various efforts. The common equipment and use of ball bow active intermediate frequency sonar and towed linear array towed sonar can search and lock nuclear submarines and quiet diesel electric submarines. At the same time, the imported Ka-28 antisubmarine helicopter has a complete set of relatively perfect antisubmarine detection equipment. It is equipped with a small sea search radar under the nose. In addition to detecting sea targets, it can also detect submarines in the ventilation tube state. There is a special ordnance cabin under the fuselage, a vgs-3 active low frequency suspended sonar, and a magnetic detector at the rear of the fuselage
in addition, as early as the 054 basic model, the Chinese Navy for the first time has a complete and systematic anti submarine equipment on the frigate. In a sense, it has basically reached or approached the level comparable to the "high wave" class. By the end of 054A, it has realized the rocket assisted torpedo with hot vertical firing, and has the potential to become a professional anti submarine ship. It is similar to the Ka-28 anti submarine helicopter (which can carry the former Soviet Union's anti submarine helicopter specially designed to deal with us made nuclear submarines) АПР-ЗЭ Air anti submarine torpedo, Yu-7 324mm light anti submarine torpedo and 3200 6-Tube rocket deep bomb launcher constitute three anti submarine fire strike networks in the far, middle and near,

5. Hello, friend! Because the 571 Yuncheng missile frigate belongs to the 054A missile frigate, its standard is built according to the 054A missile frigate standard. Next, I will refer to the 571 Yuncheng missile frigate with the 054A missile frigate data. 054A Jiangkai improved missile frigate brief introction: 054 series anti submarine frigate is China's first stealth frigate that has really formed mass proction. The 054A anti submarine frigate has strong air defense and anti-ship capability, but it still lags behind the traditional naval powers such as Japan and the United States in the core technology and displacement, such as power system, general heat vertical generator, etc. After entering the 21st century, China has launched several new types of frigates. In addition to the 052B / C missile destroyer of Jiangnan Shipyard, Hudong Zhonghua shipyard in Shanghai and Huangpu shipyard in Guangzhou have also started to build the latest 054 frigates. The first ship of ship No. 525 was launched in Shanghai Hudong factory in December 1999 and launched on September 11, 2003, named Ma'anshan; The second ship was built by Huangpu factory in Guangzhou and launched on November 6, 2003, named Wenzhou
the design basis of 054 frigate may come from the f-16u frigate previously used for export. Compared with the previous domestic Jiangwei class frigates, the 054 frigate is more concise and avant-garde in appearance, completely getting rid of the impression that the superstructure of Jianghu class and Jiangwei class frigates is scattered and low. Compared with the Chinese Navy's new 052B / C missile destroyer, the new 054 frigate has a more concise outline. It adopts a stepped superstructure integrated with the ship's side. The bridge, tower shaped front mast and composite rear mast / chimney structure are all inclined (and the inclined angle is generally quite obvious), avoiding acute angle and complex structure, Some equipment on the surface of the warship, such as boat crane, is also covered by bulwarks, which makes the stealth design of 054 frigate close to the advanced level of the West. The displacement and hull of 054 frigate is much larger than that of Jiangwei class II frigate with a displacement of 2250 tons. It has better ocean navigation ability and can accompany the ocean fleet. However, after the first two warships of 054 frigate were built and launched, it can be inferred that 054 frigate is still a kind of transitional warship from the eight joint haihongqi 7 air defense missile launcher. Starting from the third ship, the second batch of 054 frigates have made many significant improvements in design and equipment, among which the biggest improvement is the addition of domestic vertical air defense missile launcher, which greatly strengthens the air defense capability of this type of frigates. The improved 054 frigate is the present 054A stealth frigate. 054A stealth frigate is also a new type of surface combat ship equipped by the Chinese Navy, and a few of them can build more than two, which shows that its design has become mature. With the improvement of comprehensive operational performance and low cost, 054A frigate graally plays the role of general destroyer in Chinese fleet
while China is striving to narrow the gap with the world's naval power, Japan, a former naval power and China's neighbor, has built a strong 88 fleet as early as the 1980s to meet its demand for "1000 nautical miles ocean escort". Based on five general purpose destroyers, two air defense destroyers and one helicopter destroyer, this fleet has strong comprehensive combat capability. With the development of the times, Japan's newly-built "King Kong" class and "aitao" class air defense destroyers and "Gaobo" class destroyers have been serving in the sea one after another, and Japan's sea has formed a more sophisticated 90 fleet accordingly. Overall layout and stealth capability first of all, 054A stealth frigate: Based on the data provided by all parties, it is assumed that the data should be 3600 tons of standard displacement and 4000 tons of full load displacement (there is also a saying that the index row is 3900 tons and 4500 tons of full load displacement). The ship is 134m long, 16m wide, 5m draught, and the aspect ratio is close to 8.6. Maximum speed 27 knots, 18 knots, enrance 3800 nautical miles, 190 crew
in terms of overall situation, since the Chinese Navy had a lot of exchanges with the European navies in the 1980s, especially the French, Italian and British navies, and was deeply influenced by their design, when Jiangwei class frigates appeared, they inadvertently revealed some traces of the design of Western ships, When the 054 frigate appeared, it obviously borrowed some of the body designs of some French "Lafayette" frigates: popular flying shear bow, freeboard high and floating out, square stern linear structure, and small aspect ratio. Its bow is high (the height is similar to that of Russian 956 "modern" class destroyer) and its transverse section is deep V-shaped, which can well prevent buffeting and waves. Its excellent hull line shape, relatively small aspect ratio and reasonable use of fin stabilizer can ensure its seakeeping to meet the needs of ocean navigation, which has been confirmed by the second and third batch of naval escort operations to the Persian Gulf
in terms of stealth design, the effect of Lafite class is also obvious, with freeboard camber of 10 °～ twenty °， Superstructure sidewall inclination 7 °～ fifteen °， Both of them are combined into an organic whole by the corner line which is almost used to pass through the whole ship. By making its cross section present a rhombic structure, the direction of the radar radiation wave can be changed, the scattering space can be reced, the echo intensity can be reced, and the radar reflection cross section can be reced. At the same time, the corner line starts from the back part of the wall of the ship's bow side, which is strongly floating, and passes through the shielding net outside the space of the lifeboat on the side side of the midship, which is flush with the helicopter platform. Its purpose is to cover the chain winch, cable pile, windlass and other equipment on the bow deck which is not concive to radar stealth, and the design idea of deliberately recing the target signal characteristics runs through the design. In addition, radar absorbing coating is used to further improve radar stealth performance. In terms of acoustic stealth treatment, diesel engines and generators use double-layer raft devices to rece vibration and noise, and the use of new low-noise 5 large side slope low-speed propeller also strengthens this purpose. In the infrared stealth processing, its huge chimney shows that it has spray cooling facilities to suppress infrared radiation
let's look at the "high wave" class: 151 meters in length, 17.4 meters in width and 5.3 meters in draft. The standard displacement is 4650 tons, and the full load displacement is 5500 tons. The ratio of length to width is 8.88, the maximum speed is 30 knots, carrying 175 people. In addition, the layout of engine room is similar. The differences are mainly reflected in the bridge, helicopter hangar and chimney. The ship has excellent ocean navigation quality to ensure that it can normally use oqr-2 low-frequency towed sonar to carry out anti submarine operation in bad sea conditions
in the stealth design, the "high wave" class also uses two methods: shape modification and absorbing coating (such as the use on the mast) to achieve the goal of weakening the radar reflection. Its hull is 8 ° The cross section is V-shaped e to the outward inclination of the cross section; The superstructure should be designed to eliminate the radar reflection as much as possible; In terms of infrared and noise stealth, relevant infrared suppression devices, shock absorbing floating rafts, low-noise and highly skewed propellers, and aerosol noise rection systems are also adopted to improve the comprehensive stealth capability. The overall stealth effect has reached the world advanced level. Power system in the power system: 054A is also affected by Lafite class and adopts the CODAD power propulsion mode, which is composed of four pilstek 16pa6v280stc diesel engines proced by Shaanxi Diesel according to the license, with the maximum power of 6400kw and the total power of 25600kw. Two new 5-blade adjustable pitch and large pitch low speed propellers are driven by two shafts. The design of the air intake in the lower front of the chimney is similar to Burke's style. The large size of the chimney indicates that it has a spray cooling facility to suppress the infrared radiation. In addition, there are two mtu-396 diesel generator sets with power of 1500kW, reaching the same level as "high wave". Don't underestimate this change. One of the reasons why the modernization of Chinese Navy destroyers and frigates was very small in the past was that the power of the power station was very small (400KW), which could only meet the power supply demand of the electromechanical, electronic and weapon equipment on board when they were newly built. The reserve power could not meet the needs of the newly improved equipment on board. As a result, the modernization was only related to communication and communication In the field of electronic warfare and other systems
many people have different opinions on the use of CODAD power mode for 054A. In fact, the power mode of CODAD first appeared on the French Navy's Casar class air defense missile destroyer. Its four high-power pierstick 18pa6v280btc diesel engines can output 31752kw of total power, so that the 5000 ton Casar can reach 29.5 knots. It was a good area air defense ship for fuhee and later Charles de Gaulle (CVN). Later, the Lafite class adopted the CODAD power unit composed of four 16pa6v280stc diesel engines. In fact, Lafite class still exists in the formation of French aircraft carriers. Considering that the output of domestic gas turbine can not meet the Navy's needs at present, the first thing is to ensure the demand of domestic large ocean destroyer. At the same time, the technical support department of the Chinese navy has rich experience and complete technical means for long-term maintenance of such power plants. Therefore, it is the most appropriate project to use advanced and mature high-power medium and high-speed diesel engine as the main power device of medium-sized warship
rihai has fully implemented COGAG since it was on the "Chaowu" class general destroyer. At that time, it was referring to the model of dd-963 class of the United States. Considering that its full capacity is less than 4200 tons, which is almost half of the latter, rihai chose four "Spey" SMIA gas turbines from the traditional supplier R.R., with a total power of 39100kw. It can solve the contradiction between the quiet environment of high-speed pursuit of nuclear submarine and low-speed towed linear array sonar. When the new "village rain" class was built later, because the full discharge increased to 5100 tons, more power was needed to ensure that the speed could reach 30 knots. Therefore, two of the main engines were replaced by lm2500 with higher power, in order to keep the original characteristics in the case of increased displacement. The "high wave" class basically "copies" such a mode: four main engines are installed in two power cabins respectively, and the general layout of front and rear port and starboard is adopted. The first engine room is arranged on the front port side, with No.1 and No.2 engines built in to drive the left propulsion shaft. The second engine room is arranged on the starboard side of the rear, with No. 3 and No. 4 engines built in to drive the right propulsion shaft. 1. Unit 4 is lm2500 proced by GE; 2. Unit 3 is sm1c proced by R.R. The advantages of this arrangement are: first, it improves the anti damage ability of the aircraft; second, as a cruiser, sm1c has lower fuel consumption and noise than lm2500; its navigation quietness and enrance are better than "Chaowu"; third, the total power is 44400kw when the vehicle is combined to ensure that the maximum speed is 30 knots, meeting the needs of pursuing submarines. The antisubmarine capability is the same as the "high wave" class. In the general layout and power plant selection, model 054A attaches great importance to the quiet environment required for the low speed towed linear array sonar's submarine search time outline, and the corresponding development work has been carried out, and the purpose has been basically achieved through various efforts. The common equipment and use of the ball bow active intermediate frequency sonar and towed linear array towed sonar can search and lock easily

6. digital currency is an alternative currency in the form of electronic currency. At present, no central bank of any government has indicated that it will issue digital currency, and digital currency does not have to have a benchmark currency and a central bank
it is different from the virtual currency in the virtual world, because it can be used for real goods and services transactions, not limited to online games. The early digital currency (digital gold currency) is a form of electronic currency named after the weight of gold. Today's digital currency, such as bitcoin, lightcoin and ppcoin, is an electronic currency created, issued and circulated by check sum cryptography. It is characterized by the use of P2P peer-to-peer network technology to issue, manage and circulate currency. In theory, it avoids bureaucratic examination and approval, so that everyone has the right to issue currency
digital currency has done a good job, so we can send it to the chain for training.

7. Digital currency is an unregulated and digital currency, which is usually issued and managed by developers and accepted and used by members of a specific virtual community. The European Banking authority defines virtual currency as the digital expression of value, which is not issued by the central bank or authorities, nor linked with legal currency, but because it is accepted by the public, it can be used as a means of payment, and can also be transferred, stored or traded electronically
digital currency can be considered as a virtual currency based on node network and digital encryption algorithm. The core characteristics of digital currency are mainly reflected in three aspects: first, e to some open algorithms, digital currency has no issuing subject, so no one or institution can control its issuing; ② Because the number of algorithm solutions is fixed, the total amount of digital currency is fixed, which fundamentally eliminates the possibility of inflation caused by the overuse of virtual currency; ③ Because the transaction process needs the approval of each node in the network, the transaction process of digital currency is safe enough [[br / > the emergence of bitcoin poses a huge challenge to the existing monetary system. Although it belongs to the generalized virtual currency, it is essentially different from the virtual currency issued by network enterprises, so it is called digital currency. This paper compares digital currency with electronic currency and virtual currency from the aspects of issuing subject, scope of application, issuing quantity, storage form, circulation mode, credit guarantee, transaction cost and transaction security

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9. In the old world, you can go to two places: one is the spider hole in the wetland, the other is the blood mine hole in the alaxi highland. After 200, you can go to the barren land. After 250, you can go to the burning plains. After 290, you can go directly to Mars. After 360, you can go to Northrend

10. Juli mining, American famous brand!