单项选择题
A.has not been installed on the user’s computer.
B.is not turned on.
C.driver is corrupt.
D.cable is unplugged.
单项选择题 Auserreportsthatthedisplayonthelaptopappearsblurred.WhichofthefollowingisMOSTlikelythecause?()
单项选择题 WhichofthefollowingwouldbethewaytopreventtheNumLockLEDfrombeingturnedonautomaticallywhenalaptopisbooted?()
单项选择题 Whichofthefollowingprintertypesusesthinprintpinstotransferinkfromafiberorribbon?()