单选题After opening up the lid of a laptop that is powered on, nothing is displayed on the LCD. Opening and closing the lid multiple times usually causes the display to regain the signal. Which of the following components should the technician check FIRST?（）AMotherboardBVideo cardCCutoff switchDAC adapter
单选题
After opening up the lid of a laptop that is powered on, nothing is displayed on the LCD. Opening and closing the lid multiple times usually causes the display to regain the signal. Which of the following components should the technician check FIRST?（）
A
Motherboard
B
Video card
C
Cutoff switch
D
AC adapter
参考解析
解析：
暂无解析
相关考题：
单选题Which of the following is the default location for user account files in Windows Vista?（）AC:/windows/System32BC:/users/publicCC:/usersDC:/documents and settings
单选题Which of the following commands will allow a user to discover their IP address, subnet, and DNS?（）AIPCONFIGBNETSTAT -ACNSLOOKUPDIPCONFIG /ALL
单选题Which of the following commands would create an emergency repair disk for the Windows 2000Professional operating system? （）Ardisk.exeBbootdisk.exeCbootcfg /rebuildDerd.exe
单选题After installing a new video card, the computer loads Windows and continuously reboots. Which of the following would be the FIRST step that a technician should take?（）ARun CHKDSKBBoot to ERDCRun MSCONFIGDGo into Safe Mode
单选题A user states that the LCD display on their laptop has intermittent lines on the screen. The technician notices that when the display panel is moved, the line appears and then disappears. Which of the following is the MOST likely cause?（）AThe hinge on the display panel is damaged.BThe display cable is loose or damaged.CThe display panel is defective.DThe video controller on the system board is defective.
单选题A laser printer keeps printing out crumpled pages from the third tray. Which of the following is the MOST likely explanation?（）AThe pickup rollers need to be replaced.BThe paper is too wide for the tray.CThe toner cartridge is leaking.DThe pickup assembly is missing.
单选题Which of the following wireless technologies is backward compatible to receive all bands ofwireless communications?（）A802.11aB802.11bC802.11gD802.11n
单选题Which of the following utilities would a technician use to prevent a service from starting duringsystem startup?（）AEvent ViewerBSystem File CheckerCMSCONFIGDTask Manager
多选题A user reports that a printer has started producing a repetitive image defect on all printouts. Which of the following are the MOST likely causes of the problem?（） (Select TWO).AToner cartridgeBLaser scannerCFormatter PCBDPickup rollersEFuser
多选题Which of the following are good examples of malware prevention in Windows XP?（） (Select TWO)AUse a trusted aggressive pop-up blocker.BUpdate the anti-spyware software after scanning the system.CRe-install the operating system every six months.DAvoid notorious websites and hyperlinks.EOpen and then scan all attachments in emails.