智慧职教: Before any work on electrical or electronic equipment is performed, which of the following precautions should be carried out?
Secure and tag the supply circuit breaker in the open position.
举一反三
- 智慧职教: Which of the following should not be performed by the holder of a GMDSS GOC certificate?
- 智慧职教: 74.The load test should be carried out on completion.
- Which kind of control takes place before the actual work is carried out? A: feedback B: concurrent C: recurrent D: feedforward
- 智慧职教: Before any loading takes place any signs of the previous cargo should be ___.
- We should ______ before starting lawn and garden work somewhere. A: walk around the area B: remove any objects that could damage equipment C: wear hearing protection D: Both A and B.
内容
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Electronic computers, which have many advantages, can not carry out creative work and replace man.
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智慧职教: 下面哪个系统不是辅助电器系统？ Which of the following systems is not an auxiliary electrical system?
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Which equipment is used to convert chemical energy into electrical energy?
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We should _____ all the equipment before setting up the experiment. A: try for B: try out C: try on D: try into
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Yoga practice should be carried out in a regular and orderly manner. Before practice, you need to warm up so as not to cause sports injury.