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北师大版九年级物理章节周周测(十三)(135~136)习题课件
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这是一份北师大版九年级物理章节周周测(十三)(135~136)习题课件,共18页。
标定额定最大4 400①和②低串熔断允许通过的最大电流不正确零断路短路正常没有接地切断电源并联插头应选用三脚插头、接地安全插座的规格“220 V 6 A”太小,易烧坏AABDDC
标定额定最大4 400①和②低串熔断允许通过的最大电流不正确零断路短路正常没有接地切断电源并联插头应选用三脚插头、接地安全插座的规格“220 V 6 A”太小,易烧坏AABDDC
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