A.-10°
B.0°
C.10°
D.20°

A.略大于
B.小于
C.大于
D.等于

A.旋风车削螺纹
B.高速车削螺纹
C.套螺纹
D.攻螺纹

A.旋风车削螺纹
B.高速车削螺纹
C.攻螺纹
D.套螺纹

A.钻￠30mm、扩￠39.75mm
B.钻￠25mm、二次钻￠38mm、扩￠39.75mm
C.钻￠25mm、二次钻￠38mm、扩￠39.85mm
D.钻￠25mm、扩￠39.85mm

A.￠7.95mm
B.￠7.9mm
C.￠7.8mm
D.￠7.7mm

A.90°
B.60°
C.45°
D.30°

A.横刀
B.主切削刀
C.副切削刀
D.都不是

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

A.￠80～120MM
B.￠60～80MM
C.￠30～70MM
D.￠30～65MM

A.Z向进给5MM
B.Z向进给2MM
C.提刀后Z向移动5MM，再X向切到槽底
D.提刀后Z向移动2MM，再X向切到槽底