单项选择题
A.余切 B.反正切 C.切线 D.反余切
A.G82 X50.0 Y50.0 Z-10.0 R0 P2 F50 B.G81 X50.0 Y50.0 Z-10.0 R0 F50 C.G81 X50.0 Y50.0 Z-10.0 R5.0 F50 D.G83 X50.0 Y50.0 Z-10.0 R0 Q5.0 F50
A.LE B.EQ C.GE D.GT
A.导轨上 B.伺服电机上 C.工作台上 D.刀架上
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