机械寿命：是指电器在额定负载时不需要修理或更换零件而能承受的负载操作极限次数。( )

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问题机械寿命：是指电器在额定负载时不需要修理或更换零件而能承受的负载操作极限次数。( )

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解析正确为电寿命。P28T142

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