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单项选择题

A technician receives a laptop that is running out of battery power more quickly than expected.Which of the following can the technician do to correct the problem？ （）

A.Note on the work order that the laptop is losing battery capabilities and the laptop must be replaced.
B.Replace the battery by purchasing a new battery from the manufacturer.
C.Stop using the battery and use alternating current （AC） power for the laptop.
D.Replace the AC adaptor by purchasing a new adapter from the manufacturer.

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单项选择题Whichofthefollowingwouldbethesafestenvironmentalconditionforworkingonmultiplesystemsatonetime？（）

A.A tiled room with anti-static mats and wrist straps.
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A.Check Device Manager Snap-in.
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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.