_____ systems are provided with a stand-by device which will automatically be put in use i

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_____ systems are provided with a stand-by device which will automatically be put in use in the even of the running device failing through a fault condition.

A.Alarm

B.Monitoring

C.Auto start-up

D.None of the above

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。