单项选择题
Malware is removed and a computer is rebooted. Later, the malware is found on the computeragain. Which of the following would permanently solve this problem?（）
A. Login using a different account
B. Install an Internet firewall
C. Install an email spam filter
D. Go back to a previous restore point
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A. The power supply has failed.
B. The drive cable is connected backwards.
C. The floppy drive has failed.
D. The proper drivers have not been loaded. -
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A mirrored set is another name for which of the following?（）
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A laser printer keeps printing out crumpled pages from the third tray. Which of the following is the MOST likely explanation?（）
A. The pickup rollers need to be replaced.
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C. The toner cartridge is leaking.
D. The pickup assembly is missing.
