A.1437mm B.1445mm C.1450mm D.1453mm
A.90mm B.100mm C.80mm D.60mm
A.50m B.60m C.80m D.100m
A.30mm B.50mm C.60mm D.15mm
A.2对 B.4对 C.6对 D.8对
A.75kg/m B.60kg/m C.50kg/m D.43kg/m
A.400～800mB.500～1000mC.600～1200mD.300～700m
