单选题Which of the following tools is BEST used to measure voltage and amperage from a power source?（）ALoopback PlugBMultimeterCPower Supply TesterDExtension Magnet
单选题
Which of the following tools is BEST used to measure voltage and amperage from a power source?（）
A
Loopback Plug
B
Multimeter
C
Power Supply Tester
D
Extension Magnet
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