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第1题

Today, _________ can give you a music synthesizer, a fax machine, a CD-ROM drive, ect. A.input devices B.expansion car
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第2题

The basic units of a computer system are as follows: _________ A.CPU, memory and disk B.CPU, input and output unit C.
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第3题

( ) Unauthorized copying—a form of theft—of programs for personal gain is called ___________. A.unauthorized access B.
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第4题

( )_________ occupations now take the biggest share of employment in many industrial societies such as the United States
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