Which of the listed precautions should be taken when cleaning the internals of a motor with compressed air?()

A . Open the machine on both ends so as to allow the air and dust to escape B . Be certain that the circuit breaker is opened and tagged on the feeder panel C . Be certain that the air is clean and as dry as possible D . All of the above

时间:2022-11-01 18:44:47 所属题库:船舶电气与船舶安全题库

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