46.以10端銑刀銑削圓弧溝槽,尺寸如下圖,若程式為G90G00XαYβ;G01Z-3.0F50;G9
1G17G02XγYδR30.0;則

(A)α=11.481,β=-27.716,γ=11.481,δ=27.716
(B)α=-11.
481,β=27.716,γ=22.962,δ=0
(C)α=11.481,β=-27.716,γ=22.962,δ=27.716
(D)α=-
11.481,β=27.716,γ=11.481,δ=0。(sin22.5°=0.38268,cos22.5°=0.92388,tan22.5°=0.
41421)