直流电机电枢绕组元件的电势是()电势;电枢绕组元件的电流是()电流。
A.直流;交流
B.直流;直流
C.交流;交流
参考答案:C
-----“She's not a dancing teacher, is she?”
------ “_____.”
A.Yes, and she isn't
B.Yes, but she was
C.No, but she isn't
D.No, but she was
股票投资的积极管理战略的哲学基础是人能够战胜市场。