The following statement about virtual currency is correct
Publish: 2021-05-19 21:57:17
1. When the title says what function paper money has, we can only talk about the means of circulation. When we talk about the functions of paper money instead of metal money, we can say all the functions of money: circulation means, value measure, storage means, world money means of payment. Thank you very much
2. AC
3. About disk usage knowledge, the following statement is correct< A. the data storage capacity of a floppy disk is smaller than that of a hard disk
B. a floppy disk can be composed of several disks into a disk group
C. the storage density of a hard disk is larger than that of a floppy disk
D. It takes more time to read the data of a hard disk than that of a floppy disk
answer: A, B, C
[analysis] both a hard disk and a floppy disk belong to disks, It is characterized by large capacity but slow access speed.
B. a floppy disk can be composed of several disks into a disk group
C. the storage density of a hard disk is larger than that of a floppy disk
D. It takes more time to read the data of a hard disk than that of a floppy disk
answer: A, B, C
[analysis] both a hard disk and a floppy disk belong to disks, It is characterized by large capacity but slow access speed.
4. The trading partner of e-commerce is the world, and the answer is the third
e-commerce is divided into broad sense and narrow sense
in a broad sense, e-commerce is defined as using various electronic tools to engage in business activities; Narrow e-commerce is defined as mainly using the Internet to engage in business or activities. No matter the concept of e-commerce in broad or narrow sense, e-commerce covers two aspects: one is inseparable from the Internet platform, without the network, it can not be called e-commerce; Second, it is a kind of business activity through the Internet
in a narrow sense, electronic commerce (EC) refers to the global business and trade activities through the use of Internet and other electronic tools (including telegraph, telephone, radio, television, fax, computer, computer network, mobile communication, etc.). It is the sum of all kinds of business activities based on the computer network, including the behavior of suppliers of goods and services, advertisers, consumers, intermediaries and other relevant parties. People generally understand that e-commerce refers to the narrow sense of e-commerce.
e-commerce is divided into broad sense and narrow sense
in a broad sense, e-commerce is defined as using various electronic tools to engage in business activities; Narrow e-commerce is defined as mainly using the Internet to engage in business or activities. No matter the concept of e-commerce in broad or narrow sense, e-commerce covers two aspects: one is inseparable from the Internet platform, without the network, it can not be called e-commerce; Second, it is a kind of business activity through the Internet
in a narrow sense, electronic commerce (EC) refers to the global business and trade activities through the use of Internet and other electronic tools (including telegraph, telephone, radio, television, fax, computer, computer network, mobile communication, etc.). It is the sum of all kinds of business activities based on the computer network, including the behavior of suppliers of goods and services, advertisers, consumers, intermediaries and other relevant parties. People generally understand that e-commerce refers to the narrow sense of e-commerce.
5. A number greater than 0 is a positive number, and a number preceded by a "-" is called a negative number. 0 is neither a positive number nor a negative number.
so select: a
so select: a
6. The topic selection a, firewall general computer operating system will be designed and integrated in the system function, in order to prevent errors.
7. ABCD
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