
【名词&注释】
自主性(autonomy)、因特网(internet)、正确性(correctness)、输入输出(input-output)、每个人(everyone)
[单选题]The Internet is an open system, and most information is available to everyone.It is very important to add ______ to existing system for protecting the secret information.
A. Web pages
B. modem
C. security
D. network
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举一反三:
[单选题]● -0.1111111的补码是 () 。 ()
A. 1.0000001
B. 1.1111111
C. 0.1111111
D. 0.0000001
[单选题]
B. 连接操作
C. 目录操作
D. 获取操作
A. 设置传输模式B. 连接操作
B. 目录操作
C. 获取操作
[单选题]In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.Spread spectrum simply means that data is sent in(66)pieces over a number of the discrete frequencies available for use at any time in the specified range. Devices using(67) spread spectrum (DSSS)communicate by splitting each(68)of data into several parts and sending them concurrently on different (69), DSSS uses a lot of the available(70), about 22 megahertz (MHz).
A. small
B. high
C. low
D. long
[单选题]通常,在软件的输入输出设计中,合理的要求是:(52)。
A. 数据尽量由用户来输入,以便给用户提供更大的自主性
B. 输入过程应尽量容易,以减少错误的发生
C. 不能在输入过程中检验数据的正确性
D. 在输入过程中,为了不干扰用户,应尽量避免提示信息
[单选题]语言不是面向对象的程序设计语言。
A. Java
B. C++
C. Smalltalk
D. Fortran 77
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