A.1/3 B.1/2 C.2/3 D.滿水位
A.尺寸大、用料多、質(zhì)量小 B.尺寸小、用料多、質(zhì)量重 C.尺寸小、用料少、質(zhì)量輕 D.尺寸大、用料多、質(zhì)量大
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