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- 单项选择题 The statistics for a poorly performing x366 system are as follows： （1）Processor： 90% for 5 second increments （2）Memory page faults： 20/second average over 15 minutes （3）Disk： disk time 1% Which of the following will provide the greatest performance improvement？（）
A、Add memory
B、Add a processor
C、Add a faster disk subsystem
D、Exchange the processor with a faster processor
- D
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