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【单选题】
以下对新能源车DC-DC的功能描述正确的是( )A.
纯电模式下,DC的功能替代了传统燃油车挂接在发动机上的12V发电机,和蓄电池并联给各用电器提供低压电源。
B.
将电池包的直流电转换为交流电给驱动电机供电。
C.
将电动机回馈的交流电转换为直流电。
D.
监测电池包状态。
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