A.45° B.90° C.135° D.180°
A.銑削加工 B.粗加工 C.切削較平穩(wěn)切削負(fù)荷較小的加工 D.刨削加工
A.1/20~1/10 B.1/20~1/12 C.1/20~1/14 D.1/20~1/16