Atechnicianistroubleshootingamonitordisplayingablankscreenandthepowerindicatorlightison.Whichofthefollowingshouldthetechniciandonext?（）
A. Testthecomputerwithaknown-goodmonitor.
B. Checkifthemonitorisstillcoveredunderthemanufacturer’swarranty.
C. Replacethemonitor’spowercordwithaknown-goodpowercord.
D. Swapoutthecomputer’svideocard.
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Whentroubleshootingan802.11gnetwork.Whichofthefollowingcaninterferewiththenetwork?（）
A. 2.4GHzcordlessphone
B. 900MHzcordlessphone
C. Bluetoothheadset
D. Bluetoothprinter
Which of the following statements about cooling is true？（）
Adapter cards （e.g. modems） do not add to the heat generated in a computer case.
Bus mastering reduces the amount of heat generated inside a computer case.
C. Removing expansion slot covers can compromise cooling airflow design.
D. Periodic cleaning of the computer components inside the case has no effect on cooling efficiency.
供应商有下列哪些情形之一的，依照政府采购法第七十七条第一款的规定追究法律责任。（）
A. 中标或者成交后无正当理由拒不与采购人签订政府采购合同
B. 未按照采购文件确定的事项签订政府采购合同
C. 将政府采购合同转包
D. 与采购人协商将政府采购合同分包
E. 擅自变更、中止或者终止政府采购合同
AftervisitingtheWindowsUpdatewebsiteonaWindows2000computerandinstallingallupdates,auserreportsthattheyareunabletoselectanyresolutionabove640X480withsixteencolors. WhichofthefollowingproceduresshouldthetechniciancompleteFIRST?（）
A. IncreasetheamountofsharedvideomemoryintheBIOSsettings.
B. Reinstalldevicedriversforthevideocardfromthemanufacturer’swebsite.
C. SetHardwareAccelerationforthevideocardtofullintheadvancedareaofDisplaySettings.
D. UninstalltheWindowsServicePackthathadbeeninstalledmostrecently.
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