Difference between revisions of "怎样考取低压电工证理论篇"
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怎样考取低压电工证理论篇
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== 陷阱 ==
;
*
测量电机的对地绝缘电阻和相间绝缘电阻,常使用兆欧表,而不宜使用万用表.
: 必须使用兆欧表,不能使用万用表
;
*
当电气火灾发生时,如果无法切断电源,就只能带电灭火,并选择干粉或者二氧化碳灭火器,尽量少用水基式灭火器.
: 不能使用水基式灭火器
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