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【单选题】
下列关于调制解调器的作用说法正确的是( )。A.
当它作为数据的发送端时，将计算机中的数字信号转换在电话线上传输的模拟信号
B.
当它作为数据的发送端时，将计算机中的模拟信号转换在电话线上传输的数字信号
C.
当它作为数据的接收端时，将电话线上的数字信号转换在计算机中识别的模拟信号
D.
不管作为数据的发送端还是接收端，都不能识别模拟信号，只能识别数字信号
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【简答题】单词拼写（共10小题：每小题1分，满分10分） 小题1:I think sunshine and fresh air are ________ (有益的) to your health. 小题2:The police ________ (怀疑) him of having taken the money. 小题3:Please close your eyes and__________(呼吸) c...
【单选题】Eradicate (v.) means ______. —In recent years, smallpox has been eradicated —the first time in history that humans have been able to wipe out a disease. —What makes so many people feel they must eradi...
A.
to reveal
B.
to erase
C.
to regulate strictly
【简答题】I turned the ___(把手)and found the door was open
【单选题】Eradicate (v.) means ______ —In recent years, smallpox has been eradicated—the first time in history that humans have been able to wipe out a disease. —What makes so many people feel they must eradica...
A.
to review
B.
to erase
C.
to regulate strictly
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