A-A+
In order to change the direction of rotation of a D.Cmotor _____(1) the field leads must b
问题详情
In order to change the direction of rotation of a D.Cmotor _____(1) the field leads must be changed; (2) the input leads must be changed
A.(1) only
B.(2) only
C.either (1) or (2)
D.neither (1) or (2)
请帮忙给出正确答案和分析,谢谢!