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单选题
When replacing a laptop keyboard, the FIRST thing that Bob, a technician, should do is remove:（）
A
the battery.
B
the memory cover and memory sticks giving access to the screws holding the keyboard in place.
C
the top bezel covering the screws holding the keyboard in place.
D
the AC power.
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the battery.B
the memory cover and memory sticks giving access to the screws holding the keyboard in place.C
the top bezel covering the screws holding the keyboard in place.D
the AC power.
考题
单选题If an external monitor is attached to a laptop and it does not work， which of the following actions should a technician take FIRST？（）A
Re-install the operating system.B
Open and close the cover.C
Use the function key to activate the monitor.D
Install new software for the keyboard.
考题
单选题A laptop has a non-functioning keyboard. After the keyboard was replaced with a known good one, the technician finds that the keyboard still is not functioning. Which of the following steps should the technician take NEXT?（）A
Replace the motherboard.B
Check all connections.C
Replace the USB controller.D
Check the PS/2 connector.
考题
单选题When a technician left the server room Monday evening everything was operational. When the technician returned Tuesday morning， the front bezel was off of the mail server， and it had been powered off. Which of the following should be checked FIRST？（）A
TCP/IP settingsB
RAID configurationC
Whether the power cord is attachedD
Server room access log
考题
单选题A technician is troubleshooting a laptop LCD, and when the cover is opened nothing shows on the screen. Then all of a sudden the screen comes on and works fine. Which of the following should the technician check FIRST?（）A
BacklightB
InverterC
Loose cableD
Lid switch
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