83. G00 X30.Z5.;G92 X29.5 Z-30. F2.;以程式退刀下刀點為
(A)X30. Z5.
(B)X29.5 Z-30.
(C)X30. Z-30.
(D)X29.5 Z5.。
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統計: A(8), B(3), C(1), D(0), E(0) #1128991
統計: A(8), B(3), C(1), D(0), E(0) #1128991