"N20 G0O X65.Z2.0; N25 G81 X40.0 Z0.0 F0.1,可以用( )代替(华中系统)。 A. N20 G00 X65.0 Z2.0:N25 G81U-25.0Z0.0F0.1; B. N20 G00 X65.0 Z2.0;N25 G81 X40.0W-2.0F0.1; C. N20 G00 X65.0 Z2.0:N25 G81U-25.0W-2.0F0.1; D. N20 G00 X65.0 Z2.0; N25 G81 U0.0Z0.0F0.1; E. N20 G00 X65.0 Z2.0; N25 G81 X40.0 W0.0F0.1;