WheninstallinganewPlugandPlaysoundcard，atechnicianshouldturnoffandunplugthecomputer；removethecomputer’scover；locatethesoundcardslot，insertandsecurethecardintheslotand：（）A.plug in and turn on the computer； let Windows recognize the new hardware and install the driver.B.plug in the computer； let Windows recognize the new hardware and plug in the speakers.C.let Windows recognize the new hardware； install the driver and plug in the speakers.D.turn on and plug in the computer； let Windows recognize the new hardware and install the driver.

单项选择题

When installing a new Plug and Play sound card， a technician should turn off and unplug the computer； remove the computer’s cover； locate the sound card slot， insert and secure the card in the slot and：（）

A.plug in and turn on the computer； let Windows recognize the new hardware and install the driver.
B.plug in the computer； let Windows recognize the new hardware and plug in the speakers.
C.let Windows recognize the new hardware； install the driver and plug in the speakers.
D.turn on and plug in the computer； let Windows recognize the new hardware and install the driver.

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