After removing several obsolete programs from a PC, a user is experiencing slower than usuallyprocessing times. Which of the following would be the BEST way to speed up the processing? （）
- A、Use an external hard drive.
- B、Defrag the hard drive.
- C、Add more RAM to the computer.
- D、Install a larger hard drive.
正确答案:B
答案解析:有
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