Is the contract pool risky

1. My answer (best answer)
look at the balance sheet, profit, etc. first, go to this company to look at its report. Look at the profit from its sales revenue.
for example, what is the proportion of profit. From the size of gross profit, we can know how a company's buyer is.
if the proportion of gross profit and sales is large, From the dividend, we can see whether the company pays attention to investment,
or short-term profits. From the ratio of working capital and current liabilities, we can see the company's ability to repay others
if it is too low, it can explain the management efficiency of the company from the side. If it is too high, it also shows that the company is not good at investment.
in other aspects, you can understand its background, evaluate its ability, and whether it is suitable for the company from the perspective of the company's managers. Or from the past performance, you can see how the company's loans are. If there are too many, there will be risks, or lack of confidence. Dividing the net profit by the sales volume, we can know the consumption management of the company in other aspects, such as water and electricity, office supplies, etc. if the result is relatively high, it means that the company is economical and orderly. If it is relatively low, it means that the efficiency of the company is not high,
if there is a significant increase, the company is in the right direction.

2.

The contract transaction of digital currency is not safe. There are still many loopholes in the digital currency trading platform, for example, the most common are the following six kinds:

1. Denial of service attack

denial of service attack is the most important attack against the digital currency trading platform at present. Through denial of service attack, the attacker makes the trading platform unable to access normally, Because users can not accurately distinguish the degree of attack, it often causes panic asset transfer, which brings some loss

2. Phishing incident

even the best technical measures at present can not make the digital currency trading platform avoid phishing attacks. Some hackers and criminals can confuse digital currency investors by means of fake domain names or fake pages, while ordinary investors can't identify the authenticity, so it's easy to cause asset losses

Many digital currency trading platforms use a single private key to protect the hot wallet. If hackers can access a single private key, they can crack the hot wallet related to the private key. For example, in the attack on yapizon of Seoul stock exchange in 2017, the attackers stole hot wallets from the trading platform twice in a year, resulting in a total loss of nearly 50% of the assets of the trading platform and eventually leading to the bankruptcy of the trading platform

Fourth, e to the lack of perfect risk isolation measures, or ineffective supervision on the rights of employees, some employees who have the operation rights of the platform use internal trust to seek unjust wealth for themselves. For example, in 2016, the event of employees stealing bitcoin on shapeshift caused a total loss of US $230000 to the trading platform by stealing and reselling sensitive information to others

Fifth, the software vulnerability of digital currency trading platform includes single sign on vulnerability, OAuth protocol vulnerability and so on. At present, all countries have laws requiring banks or other financial institutions to implement information security measures to protect customers' deposits. However, e to the fact that the blockchain field is still in its infancy, there is a lack of such specifications for encrypting digital assets. Therefore, it is not accidental that many trading platforms have a large number of loopholes in the absence of security constraints

6. Transaction malleability the technical supporters of blockchain often think that blockchain transactions are highly secure because they are recorded on records that are said to be unchangeable, but each transaction needs to have a corresponding signature, and the records can be forged temporarily before the final confirmation of the transaction

extended data:

rules of contract transaction

1. Transaction time

contract transaction is 7 * 24 hours transaction, which will be interrupted only ring the settlement or delivery period of 16:00 (UTC + 8) every Friday. In the last 10 minutes before delivery, the contract can only be closed, not opened

Transaction types are divided into two types, opening and closing. Opening and closing positions are divided into two directions: buying and selling:

buying open long (bullish) refers to buying a certain number of contracts when users are bullish and bullish on the index. Carry out "buy open more" operation, match success will increase long position

selling pingo (multi order closing) refers to the selling contract that the user makes up for when he is no longer bullish on the future index, offsets with the current buying contract and exits the market. Carry on "sell flat much" operation, match after success, will rece long position

short selling (bearish) refers to the new sale of a certain number of certain contracts when the user is short or bearish on the index. Carry out the operation of "sell short" and increase the short position after successful matching

buy close (short single close) refers to the buy contract that the user will not be bearish on the future index market and make up for, offset with the current sell contract and exit the market. Carry out "buy short" operation, after matching successfully, short position will be reced

3. Order method

limit order: the user needs to specify the price and quantity of the order. Limit order can be used for opening and closing positions

order at opposite price: if you choose to order at opposite price, you can only enter the order quantity, not the order price. The system will read the latest competitor price at the moment of receiving the entrustment (if the user buys, the competitor price is the selling price of 1); If it is a sell, then the counter price is buy 1 price). Issue a price limit order for this counter price

4. Position

the user owns the position after opening and trading, and the positions in the same direction of the same contract will be merged. In a contract account, there can only be 6 positions at most, that is, multiple positions of current week contract, short positions of current week contract, multiple positions of next week contract, short positions of next week contract, multiple positions of quarterly contract and short positions of quarterly contract

5. Order restriction

the platform will restrict the number of single user's positions in a certain period of contract and the number of single open / close positions, so as to prevent users from manipulating the market

when the number of positions or entrustments of users is too large, the platform has the right to require users to take risk control measures, including but not limited to cancellation of orders, closing positions, etc. The platform has the right to adopt measures including but not limited to limiting the total number of positions, limiting the total number of consignments, limiting the opening of positions, withdrawing orders, forcibly closing positions, etc. for risk control

3. There are risks in any game transaction. The greater the return, the greater the risk, especially in contracts
the benefits of the contract are obvious. Take 58coin exchange as an example. If one point of BTC fluctuation is 5usdt, then 190 points will be 950u, which is about 6400 RMB. If the BTC is converted into RMB, it will earn 190 points from 5310 to 5500 now. And it costs 30000 yuan to buy a bitcoin. If you make a contract, you can buy five BTCs for more than 5000 RMB. High yield, high risk, clear market, reasonable trading
in addition, contracts are not only a risk, but also a means of hedging. In a bear market, contracts play a stabilizing role, so that assets do not shrink as much as possible.

4. Under the current new normal of China's economy, it is of positive practical and far-reaching historical significance to explore the issue of digital currency by the central bank
the issue of digital currency can rece the high cost of traditional paper currency issuance and circulation, improve the convenience and transparency of economic transactions, rece money laundering, tax evasion and other criminal acts, enhance the central bank's control over money supply and circulation, better support economic and social development, and help the comprehensive development of Inclusive Finance

in the future, the establishment of digital currency issuance and circulation system will also help China build a new financial infrastructure, further improve the payment system, enhance the efficiency of payment and settlement, and promote the upgrading of economic quality and efficiency.

5. The Chinese language teaching and examination base of Puhua group is committed to training international Chinese teachers and providing talents to the world
after training, they will take the unified examination. Those who pass the examination will be jointly certified by the World Institute of Chinese characters, the Chinese Embassy in the United States, the State Department of the United States, the national talent flow center of the Ministry of personnel, the International Certification Association and the national talent network of China. Issue corresponding qualification certificate. It can also be transferred to overseas employment through the platform. Or choose domestic employment

6.

First of all, let's answer your question

1. all programming starts with learning the language in the code, and the most basic is C language. When you have a little understanding of C language, you can try to learn java language, which is better for employment today

2. then consider C + +, which is more difficult than C language. When we are faced with a new programming language, we only need to understand the grammatical characteristics of the language, and then we can deal with and apply it easily

3. you can just master a language at the beginning. After all, you can master a language at work

4. for example, big data, blockchain and artificial intelligence (AI), which have been popular for 18 years, can be mastered not only by one language, but also by repeated practice, observation, analysis, comparison and summary

< / OL > < H2 > extended materials:

1. programming is the abbreviation of programming in Chinese, which is to let the computer solve a problem on behalf of a certain computing system and stipulate a certain computing method, which is the process of the computing system running according to the computing method and finally getting the corresponding results

2. in order to make the computer understand people's intention, human beings must tell the computer the ideas, methods and means of the problems to be solved in the form that the computer can understand, so that the computer can work step by step according to people's instructions and complete certain tasks. The process of communication between people and computing system is programming

7. Black horse only direct, not join! The headquarters directly sends lecturers to the sub campuses to teach, using the same training mode and courses. Teachers from other branch schools also have to go to Beijing headquarters through training.

8.

Ecoder, as the application of national 863 key research achievements, the second prize of National Invention Award and the second prize of national teaching award, serves as the cooperation platform of practical teaching working committee of new engineering alliance, the construction and operation platform of national excellent courses, and the cooperation platform of MOOC alliance of university computer, enabling the teaching, experiment and application of IT skills, human intelligence, big data, cloud computing, and blockchain full technology stack Training and scientific research activities

Ecoder integrates all kinds of teaching resources with advanced Internet technology. Strong innovation ability, strong teaching staff and highly customized options provide a comprehensive and high-quality solution for it skills teaching, training and teacher training of universities and enterprises, and help universities and enterprises to overtake

3.2. View the reference answers
if users encounter training tasks that cannot be answered in the process of training, they can view & lt; Reference answer & quot; Learn. Check the reference answer will dect a certain amount of gold coins from the user. If it is a classroom task assigned by the teacher, according to the teacher's configuration, checking the answers may make this level unable to score

9. Futures are mainly not commodities, but standardized tradable contracts based on certain bulk procts such as cotton, soybean, oil, and financial assets such as stocks and bonds. Therefore, the subject matter can be a commodity (such as gold, crude oil, agricultural procts) or a financial instrument< The risk of futures investment:
1. The risk of leverage use
the function of capital amplification not only enlarges the income, but also enlarges the risk. Therefore, how and how much leverage should be used should vary from person to person. The higher level can be more than five times or even fully leveraged. If the lower level also uses high leverage, it will undoubtedly make the risk out of control
2. Forced balance and position explosion
exchanges and futures brokerage companies need to make settlement on each trading day. When the margin of investors is insufficient and lower than the specified proportion, futures companies will forcibly close their positions. Sometimes, if the market is extreme, there will even be a burst of positions, that is, all the funds in the account will be lost, and even the futures company will need to pay the part of the loss exceeding the margin of the account
3. Delivery risk
ordinary investors do not buy soybeans in a few months, nor do they short copper to sell copper in a few months. If the contract is held until the delivery date, investors need to gather enough funds or physical goods for delivery (the money is about 10 times of the margin).

10. A miner needs several graphics cards to work together. It basically starts with 1060. Such a 1060 graphics card can't even compare with 1 / 4 miner, basically less than 1 / 6.