A.0.5~0.7m/s B.0.3~0.5m/s C.0.2~0.4m/s D.0.7~0.9m/s
A.直流電流 B.交流電流 C.直流電壓 D.交流電壓
A.功率與轉(zhuǎn)速B.功率與轉(zhuǎn)矩C.轉(zhuǎn)矩與轉(zhuǎn)速