Password is a secret series of(69)that enables a user to access a file, computer, or program. On multi-user systems, each user m

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问题 Password is a secret series of(69)that enables a user to access a file, computer, or program. On multi-user systems, each user must enter his or her password before the computer will respond to(70). The password helps ensure that(71)users do not access the computer. In addition, data files and programs may require a password.

选项 A、order
B、commands
C、instruction
D、tracks

答案B

解析 题意为“计算机响应命令”。instruction意思为“指令”。command意思为“命令”。答案为B。
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