A.45号段钢
B.20号段钢
C.30号段钢
D.50号段钢

A.双筒形
B.长方形
C.正方形
D.圆形

A.高碳钢
B.20号钢
C.铸铁件
D.ZG230-450铸件钢

A.1200mm
B.1250mm
C.1150mm
D.1100mm

A.450KPa
B.500KPa
C.550KPa
D.600KPa

A.0.5mm
B.0.6mm
C.1mm
D.1.6mm

A.增大转速，降低转距
B.增大转速，增大转距
C.降低转速，降低转距
D.降低转速，增大转距

A.模数相等
B.分度圆上压力角相等
C.齿数相等
D.模数相等及分度圆上压力角相等

A.34mm
B.37mm
C.40mm
D.43mm

A.90mm
B.95mm
C.100mm
D.105mm

A.4mm
B.6mm
C.8mm
D.10mm