A—cost price F—sale price

B—factory price G—wholesale price

C—net price H—retail price

D—price free on board I—fixed price

E—purchase price J—guaranteed price

K—cash price O—price control

L—market price P—maximum price

M—preferential price Q—minimum price

N—piece price

（）销售价格（）成本价

镗床上加工平画环形T形槽时一般采用（）进行切削。

A.微调镗刀

B.单刃弯头镗铣刀

C.平旋盘径向刀架

D.主轴上装T形槽铣刀