单项选择题
A.3±1mm B.5±1mm C.6±1mm D.9±1mm
A.15° B.30° C.60° D.90°
A.低分子复合材料 B.中分子复合材料 C.高分子复合材料 D.以上都不是
A.45 B.35Cr C.40Cr D.45Cr
A.7mm B.8mm C.9mm D.10mm
A.90km/h B.100km/h C.110km/h D.120km/h
A.导框摇动座 B.导框磨耗板 C.轴箱橡胶垫 D.钢弹簧
A.125m B.135m C.145m D.155m
A.1480mm B.1500mm C.1520mm D.1560mm
A.1000mm B.1067mm C.1435mm D.1520mm
A.0.6mm B.0.7mm C.0.8mm D.0.9mm