题目内容：
一台4极的直流电动机，采用单叠绕组时，其绕组的支路数为（）。
A.1
B.2
C.4
D.8
参考答案：
选择题：一台4极的直流电动机，采用单叠绕组时，其绕组的支路数为（）。
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
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