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单选题
A technician suspects the AC voltage into a PC power supply is bad. Which of the following toolswould MOST likely be used to confirm the diagnosis?（）
A
Multimeter
B
Oscilloscope
C
Cable tester
D
Power supply tester
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考题
单选题A technician suspects the AC voltage into a PC power supply is bad. Which of the following toolswould MOST likely be used to confirm the diagnosis?（）A
MultimeterB
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单选题The technician has replaced a power supply with an identical power supply, and now the high end graphics card is not working. Which of the following should the technician check?（）A
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考题
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The 12v power cord is installed incorrectly.
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单选题AC and DC generators are similar in that they （）A
both generate alternating voltagesB
both rectify the voltage before deliveryC
are constructed at the same physical size for the same kilowatt ratingD
both supply three-phase power
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