单项选择题
A.Hibernate
B.Suspend
C.Standby
D.Shutdown
单项选择题 Ifanexternalmonitorisattachedtoalaptopanditdoesnotwork，whichofthefollowingactionsshouldatechniciantakeFIRST？（）
单项选择题 Afterbootingupanewcomputer，atechnicianobservesthattheUSBportsarenotworkingwithanyUSBdevices.WhichofthefollowingshouldbedoneFIRST？（）
单项选择题 Aclientreportsthatthelaptopisnotperformingacompletechargeofthebattery.WhichofthefollowingactionsshouldbetakenFIRST？（）