The field coils _____and the armature _____. This
The field coils _____and the armature _____. This is in fact the arrangement adopted for large, heavy duty alternators.
A.are stationary / rotates
B.are stationary /is stationary
C.rotate / is stationary
D.rotate / rotates
请帮忙给出正确答案和分析,谢谢!
参考解答
正确答案:C
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