S1: Check escape routes and report. S2: All escape routes clear. Q: How about escape routes?
单选题
S1: The No.2 generator broke down. S2: Start the stand by generator and supply the power. Q: What happened?
单选题
S1: Should you pay attention to the ammeter when starting the purifier. S2: Yes. Firstly it is 50A, and finally it is 20A. Q: How much is the starting current of the purifier?
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