单选题A technician has been asked to ensure a PC is supplied with power for a short time, during apower failure. The technician should install which of the following devices to ensure thisrequirement is easily met?（）ABackup power generatorBUninterruptable power supplyCPower line conditionersDSurge protectors
单选题
A technician has been asked to ensure a PC is supplied with power for a short time, during apower failure. The technician should install which of the following devices to ensure thisrequirement is easily met?（）
A
Backup power generator
B
Uninterruptable power supply
C
Power line conditioners
D
Surge protectors
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