問題詳情
246. 欲以 NC 銑床攻 M12×1.75 的螺紋，若牙深 25mm 且下刀開始及提刀停止均在 Z=5.0mm 處，則可使用到下列何單節程式？
(A)G99G86X30.0Y20.0Z-25.0R5.0F87.5；
(B)M03S50；
(C)G99G84X30.0Y20.0Z-25.0R5.0F87.5；
(D)G01Z-25.0F87.5；。
(A)G99G86X30.0Y20.0Z-25.0R5.0F87.5；
(B)M03S50；
(C)G99G84X30.0Y20.0Z-25.0R5.0F87.5；
(D)G01Z-25.0F87.5；。
參考答案
答案：B,C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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