东风8B型内燃机车采用的ZDl09C型牵引电动机的最小恒功电流为（）

A.3001kg

B.4001kg

C.5001kg

D.6001kg

A.680r／min

B.732r／min

C.754r／min

D.845r／min

A.45%

B.56%

C.65%

A.40mm

B.50mm

C.60mm

D.70mm

A.100%

B.80%

C.60%

D.50%

A.23．8mill

B.25mnl

C.26．2nlin

D.27．6l’nnl

A.l000V

B.1200V

C.1300V

D.1400V

A.355kg

B.400kg

C.455kg

D.500kg

A.110V

B.150V

C.220V

D.380V

A.20°

B.21°

C.22°

D.23°