电吹风直流永磁电机的转子由（）组成了。
A.二组线圈
B.二块永久磁铁
C.转子铁芯和电枢绕组
D.二块永久磁铁
参考答案：C
The discussion ____ alive when an interesting topic was brought in. [ ]
A. was coming
B. had come
C. has come
D. came
组合架零层配线中，从组合架正面看，从左向右顺序编号，（）为供条件电源用的18柱端子板。
A、01～03
B、04～06
C、07～08
D、09～013
