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。
