单项选择题
A.90 B.120 C.180 D.360
A.G04 X2.5 B.G04 Y2.5 C.G04 Z2.5 D.G04 P2.5
A.G02为逆时针圆弧切削 B.配合平面选择,G02为顺时针圆弧切削 C.圆弧起点至终点的圆心角大于180° D.配合平面选择,G02为逆时针圆弧切削