A.7744W B.17424W C.23232W D.29040W
A.臨界轉(zhuǎn)差率不變,最大轉(zhuǎn)矩不變 B.臨界轉(zhuǎn)差率減小,最大轉(zhuǎn)矩增大 C.臨界轉(zhuǎn)差率不變,最大轉(zhuǎn)矩減小 D.臨界轉(zhuǎn)差率不變,最大轉(zhuǎn)矩增大
A.50V B.110V C.220V D.440V