题目内容

【单选题】 There are ( )bytes in 16 terabytes.

A. 216
B. 240
C. 244
D. 256

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【单选题】 CPU registers should have( )speed memory.

A. high
B. medium
C. low
D. any of the above

【单选题】 Main memory in a computer usually consists of large amounts of ( )speed memory.

A. high
B. medium
C. low
D. any of the above

【单选题】 The( )is a nonstorage I/O device.

A. keyboard
B. monitor
C. printer
D. all of the above

【单选题】 A( ) is an optical storage device.

A. CD-ROM
B. CD-R
CD-RW
D. all of the above