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A server has been intermittently shutting off. The power going to the server was tested and is giving the appropriate voltages. Which of the following tools would be used to test the power supply？（）
- A、 POST diagnostic card
- B、 OTDR
- C、 TDR
- D、 Multimeter
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DustB
Power SurgeC
Excessive humidityD
High temperatures
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