A.定子線圈和轉(zhuǎn)子線圈都用水冷卻,定子鐵芯用空氣冷卻 B.定子線圈和定子鐵芯都用水冷卻,轉(zhuǎn)子線圈用空氣冷卻 C.定子線圈和轉(zhuǎn)子線圈都用空氣冷卻,定子鐵芯用水冷卻 D.定子線圈和定子鐵芯都用空氣冷卻,轉(zhuǎn)子線圈用水冷卻
A.0.05 B.0.10 C.0.15 D.0.20
A.20 B.30 C.40 D.50