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
单项选择题 Which of the following should be done FIRST to a hard drive before it is disposed?（）
单项选择题 Which of the following has the HIGHEST connection latency? （）
单项选择题 Which of the following commands changes a file characteristic so that it cannot be seen with astandard directory query? （）
