单项选择题
A.X120.Z80.B.X135.Z85.C.X105.Z75.D.X135.Z75.
A.X130.Z70.B.X70.Z30.C.X70.Z70.D.X100.Z50.
A.轴类工件内外轮廓B.盘类工件或凹槽轮廓C.锻件或初步成形工件D.切槽或深孔钻削