【简答题】
A、G01 G42 X21.0 Y2.0 D01 F300 B、G00 G41 X100.0 Y20.5 D0l C、G00 G43 Z3.0 H01 D、G02 G41 X30.0 Y2.0 R15.0 D01 F200
A、G01 G42 X21.0 Y2.0 DO1 F300 B、G00 G41 X100.0 Y20.5 DO1 C、G00 G43 Z3.0 H01 D、G02 G41 X30.0 Y2.0 815.0 DO1 F200