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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# 额定电压为380V的熔断器可用在220V的线路中
# 螺旋式熔断器的电源进线应接在下端
# 连接电容器的导线的长期允许电流不应小于电容器额定电流的 130%
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