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> 下列关于电源和用电器说法正确的是 A.所有电源都由化学能转换为电能 B.电源工作时是将其它形式的转化为电能的装置 C.电池充电时，化学能转化为电能 D.用电器是产生电能的装置

问题：

发布时间：2024-09-09

下列关于电源和用电器说法正确的是

A.所有电源都由化学能转换为电能
B.电源工作时是将其它形式的转化为电能的装置
C.电池充电时，化学能转化为电能
D.用电器是产生电能的装置

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