A. 交互捻 B. 同向捻 C. 对称左右捻
A. 98,90,84,82,80,70,64,60,30,20,15 B. 98,84,90,70,80,60,82,30,20,15,64 C. 90,84,30,70,80,60,64,98,82,15,20 D. 15,20,30,60,64,70,80,82,84,90,98
A. 通断电 B. 换向 C. 通断电和换向