单项选择题

What is the FIRST step in diagnosing a completely dead computer that was working fine the day before？（）

A.remove all peripherals and reinstall them one at a time
B.replace the CMOS battery
C.check the AC power cord and verify the power source
D.back up the entire hard drive

<上一题目录没有了>

热门试题

单项选择题Wherearethefirstcomputerinstructionsavailablewhenamicrocomputerispoweringup？（）

A.floppy drive
B.boot.ini
C.ROM
D.config.sys

单项选择题WhatistheMOSTsignificantdifferencebetweenEDORAMandfastpagemodeDRAM？（）

A.EDO RAM is faster.
B.EDO RAM is slower.
C.EDO RAM is smaller.
D.EDO RAM is cheaper.

单项选择题WhatisthestandardIRQforthekeyboard？（）

A.9
B.0
C.1
D.7

单项选择题Whichcleaningproductshouldbeusedfortheinsideofacomputer？（）

A.glass cleaner
B.a simple ammonia and water solution followed by an antistatic solution
C.a bleach solution followed by water
D.compressed air

单项选择题Whenreplacingapowersupply，whatMUSTthetechnicianobserve？（）

A.voltage
B.current
C.wattage
D.resistance