单项选择题
A.The module is installed backwards.
B.A USB device is using some memory.
C.An onboard video card is using some memory.
D.The CPU is using some memory.
单项选择题 Atechnicianreceivesalaptopthatisrunningoutofbatterypowermorequicklythanexpected.Whichofthefollowingcanthetechniciandotocorrecttheproblem？（）
单项选择题 Whichofthefollowingwouldbethesafestenvironmentalconditionforworkingonmultiplesystemsatonetime？（）
多项选择题 Whichofthefollowingcanbeusedtodeterminetheamountofphysicalmemoryinstalledinalaptop？（）