题目内容

External hard drives are used primarily to complement an internal hard disk.

A. 对
B. 错

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External hard disks use different technology than internal hard disks.

A. 对
B. 错

Disk caching improves hard-disk performance by compressing files.

A. 对
B. 错

Disk caching uses a combination of hardware and software.

A. 对
B. 错

RAID connects several inexpensive hard-disk drives to one another.

A. 对
B. 错