46. 銑削 25 ㎜×25 ㎜外形輪廓，程式為 G90 G01 G42 X0 Y0 D01 F100；而接續的單節不正確的是(A)G91 X25.0；Y2 5.0；X-25.0；Y-25.0；(B)G91 X-25.0；Y-25.0；X25.0；Y25.0；(C)G91 Y-25.0；X25.0；Y25.0；X-25.0；(D)G91 Y2 5.0；X25.0；Y-25.0；X-25.0；。