单项选择题
A.G22 B.G23 C.G05.1 D.G07.1
A.行距不够密B.步距太小C.球刀刀刃不太锋利D.球刀尖部的切削速度几乎为零
A.G85 X50.0Y50.0 Z-10.0 R0 F50 B.G81 X50.0Y50.0 Z-10.0 R0 F50 C.G81 X50.0Y50.0 Z-10.0 R5.0F50 D.G83 X50.0Y50.0 Z-10.0 R5.0F50