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Daily Security Management Technology Question (12.4)

2016-12-04View Original

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1. The scope covered by the Regulations on the Safety Supervision of Special Equipment includes (  ) types of special equipment. A. Seven B. Eight C. Five D. Six 2. The let-go current is an important threshold for determining the current that can pass through the human body. For the effective value of the power frequency current, the breaking current is approximately (  ). A. 5-10mAB. 50mAC. 500mAD. 1AReference**: A, A,

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