单项选择题
A.(8,-5) B.无非齐次坐标 C.(-8,-5) D.(8,5)
A.(0,0,1) B.(0,1,0) C.(1,1,1) D.(1,0,0)
A.[0,1,0] B.[1,0,0] C.[0,0,1] D.[1,1,0]
A.(3,-1,0) B.(1,-3,0) C.(3,1,0) D.(1,1,0)
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