ZD105型牵引电机定子中单个换向极阻值为( )。(

ZD105型牵引电机定子中单个换向极阻值为( )。(

A.0.000 558Ω

B.0.010 558Ω

C.0.020 558Ω

D.0.030558Ω

正确答案是A