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第1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2题

( ) Unauthorized copying—a form of theft—of programs for personal gain is called ___________. A.unauthorized access B.
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第3题

( )_________ occupations now take the biggest share of employment in many industrial societies such as the United States
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第4题

( ) Most major corporations today use special hardware and software called _______to control access to their internal co
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