【多选题】【消耗次数：1】
三相异步电动机的基本结构？
①
定子
②
转子
③
附件
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三相异步电动机的结构是哪些？
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三相异步电动机带载工作时，其转子绕组上?电流。
①
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②
B．由于有外部电源给转子供电，故有电流
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