单项选择题
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.
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相关考题
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单项选择题
Afterbootingupanewcomputer，atechnicianobservesthattheUSBportsarenotworkingwithanyUSBdevices.WhichofthefollowingshouldbedoneFIRST？（）
A.Check the computer to verify that the jumper settings for USB are correct.
B.Connect the USB devices to a different computer to test the devices.
C.Buy new USB wires and test USB functionality.
D.Check the BIOS to verify that USB functionality is enabled. -
单项选择题
Aclientreportsthatthelaptopisnotperformingacompletechargeofthebattery.WhichofthefollowingactionsshouldbetakenFIRST？（）
A.Update the BIOS.
B.Run the battery calibrator.
C.Reinstall the ACPI drivers.
D.Replace the power adapter. -
多项选择题
WhichofthefollowingareprimarydifferencesbetweenalaptopandadesktopCPU？（）
A.heat production
B.L2 Cache
C.clock speed
D.front side bus
E.power consumption
