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 点评
说的很有理,我也是电工,只不过是较低级的,只见过保护火线的,老的那种闸刀式开关(带双保险丝的)都没有了。 
 
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 点评
现在的家用电都规范多了,零火线弄错那是施工方失误或者说农村私接电线有,合格都没有了,版主的那种插头不会插错。 
 
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