单项选择题

Which of the following would BEST provide cooling to a processor?（）

A. Case fan
B. Heatsink
C. Liquid cooling system
D. CPU fan

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单项选择题
Which of the following should be done FIRST to a hard drive before it is disposed?（）

A. Partition
B. Physical damage
C. Data wipe
D. Format
单项选择题
Which of the following has the HIGHEST connection latency? （）

A.Satellite
B.Cable
C.DSL
D.Dial-up
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