题目内容
A(73)is a value that never changes, for example: the value of Pi(approximately 3.14).
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A(68)is used to show you what the computer is doing. It is called(69)equipment as well as the keyboard, the mouse and the printer.
(66)is defined as the buying and selling of products and services over the Internet. It had included the handling of purchase(67)and funds transfers over computer networks from its inception.
(71)is not a programming language.
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