―I’ll be away on a business trip. Would you mind looking after my cat?   

―Not at all. ___________. 

A．I have no time

B．I’d rather not

C．I’d like it

D．I’d be happy to

三相绕线式交流电动机通过（）方法，可使电动机反转。

A、调换转子任意两根引线

B、调换定子任意两相电源线

C、转子引线、定子电源线全部进行调换

D、转子和定子引线互换