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周末,小华在家开着空调看电视.妈妈打开电饭锅做饭时,家里的自动空气开关“跳闸”了.则“跳闸”的原因可能是 .根据小华家自动空气开关上的铭牌(如图19-2-1所示),他家的电路允许使用的电器总功率...
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