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计算机期末复习练习2

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计算机期末复习练习2

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54.A(n) computer program forms the software that sets up a computer to do a specific task.

A、正确

B、错误

答案：A

计算机期末复习练习2

50.For protection against power outages, you can connect your computer to a( ) power supply that offers battery backup along with surge protection. ( )

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68. is usually generated at Web sites and is designed to report your online activities to marketing companies that use the information to send you advertisements. ( )

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40.The mouse is the most important input device on desktop and notebook computers.

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145._is a wireless network technology that transmits data between devices using radio wave used in coffee shops, airports, and other public places.

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37.A voice converts digital text into audio output. ( )

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80.Digital audio is stored in a variety of file types, including all of these EXCEPT: . ( )

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16.Most computers have only one location for storing data. ( )

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48.True LED screens have a bright, crisp image and use less power that LCDs.对

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54.The purpose of a is to serve data to computers connected to a network. ( )

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11.Contrast ratio is the difference between the luminance of white and black pixels. ( )

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计算机期末复习练习2

54.A(n) computer program forms the software that sets up a computer to do a specific task.

A、正确

B、错误

答案：A

相关题目

50.For protection against power outages, you can connect your computer to a( ) power supply that offers battery backup along with surge protection. ( )

A. 　uninterruptible

B. 　corrupt-proof

C. 　interruptible

D. 　metered

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68. is usually generated at Web sites and is designed to report your online activities to marketing companies that use the information to send you advertisements. ( )

A. 　File Compression

B. 　Viruses

C. 　Spam

D. 　Spyware

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40.The mouse is the most important input device on desktop and notebook computers.

A. 正确

B. 错误

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145._is a wireless network technology that transmits data between devices using radio wave used in coffee shops, airports, and other public places.

A. 　 Ethernet

B. 　 Wi-Fi