斜二轴测图各轴之间的轴间角为( )。
(A)∠XOY=45∘\angle XOY = 45^{\circ}∠XOY=45∘,∠XOZ=135∘\angle XOZ = 135^{\circ}∠XOZ=135∘,∠YOZ=180∘\angle YOZ = 180^{\circ}∠YOZ=180∘
(B)∠XOY=90∘\angle XOY = 90^{\circ}∠XOY=90∘,∠XOZ=90∘\angle XOZ = 90^{\circ}∠XOZ=90∘,∠YOZ=180∘\angle YOZ = 180^{\circ}∠YOZ=180∘
(C)∠XOY=∠XOZ=∠YOZ=120∘\angle XOY = \angle XOZ = \angle YOZ = 120^{\circ}∠XOY=∠XOZ=∠YOZ=120∘
(D)∠XOY=135∘\angle XOY = 135^{\circ}∠XOY=135∘,∠XOZ=90∘\angle XOZ = 90^{\circ}∠XOZ=90∘,∠YOZ=135∘\angle YOZ = 135^{\circ}∠YOZ=135∘
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