新空压机启动不了，找到罢工原因后，老板直呼被骗了!【城阳电工电路】
30:15
电压忽高忽低烧了不少东西，故障原因很低级，我这跑了二百多公里，这费用收多少合适呢？【城阳电工电路】
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What is the reason why eight air conditioners were burned in a row and the electrician ran away wit
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GEC-Marconi Flight Data Acquisition Unit teardown
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The customer reported that the main gate could not be closed. He thought it was very simple to clos
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The neighbor's house was decorated and smashed the wall and his house was blocked more than 10 tim
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I don't use much electricity at home and the electricity meter runs very fast. I found out the rea
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The leakage of factory equipment will not be found for a while but the leakage of more than 200 vo
34:32