A.20
B.15
C.10
D.5

A.小于0.5mm
B.小于1mm
C.1～2mm
D.可以大于2mm

A.强度愈低，塑性愈差
B.强度愈低，塑性愈好
C.强度愈高，塑性愈好
D.强度愈高，塑性愈差

A.80℃
B.100℃
C.145℃
D.160℃

A.15%
B.25%
C.35%
D.45%

A.i＝i₁＋i₂＋i₃＝16
B.i＝i₁×i₂×i₃＝96
C.i＝3（i₁＋i₂＋i₃）＝48
D.不能求得

A.50m
B.40m
C.30m
D.20m

A.两轮分度圆半径之和
B.两轮的节圆半径之和
C.一轮的齿顶圆半径与另一轮的基圆半径之和
D.一轮的齿顶圆半径与另一轮的齿根圆半径之和

A.45°
B.90°
C.135°
D.180°

A.50mm
B.100mm
C.150mm
D.200mm

A.5mm
B.10mm
C.15mm
D.20mm