A . 
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C . 
D . 
[单选题]过轴和点(1,2,-1)的平面方程是()。A . ['['+2--6=0B . 2-=0C . +2=0D . +=0
[单选题]过z轴和点(1,2,-1)的平面方程是()。A.x+2y-z-6=0B.2x-y=0C.y+2z=0D.x+z=0
[单选题]过z轴和点(1,2,-1)的平面方程是()。A.x+2y-z-6=0B.2x-y=0C.y+2z=0D.x+z=0
[单选题]过z轴和点(1,2,-1)的平面方程是()。A . x+2y-z-6=0B . 2x-y=0C . y+2z=0D . x+z=0
[单选题]过点A(1,1,-1),B(-2,-2,2)和C(1,-1,2)三点的平面方程为()。A . x-3y-2z=0B . x+3y-2z-6=0C . x-3y+2z+4=0D . x+3y+2z-2=0
[单选题]过z轴和点M(1,2,﹣1)的平面方程是( )。A.x+2y-z-6=0B.2x-y=0C.y+2z=0D.x+z=0
[单选题]过z轴和点M(1,2,﹣1)的平面方程是( )。A.x+2y-z-6=0B.2x-y=0C.y+2z=0D.x+z=0
[单选题]过z轴和点M(1,2,﹣1)的平面方程是( )。A.x+2y-z-6=0B.2x-y=0C.y+2z=0D.x+z=0
[单选题]过z轴和点M(1,2,﹣1)的平面方程是( )。A.x+2y-z-6=0B.2x-y=0C.y+2z=0D.x+z=0
[单选题]过z轴和点M(1,2,﹣1)的平面方程是( )。A.x+2y-z-6=0B.2x-y=0C.y+2z=0D.x+z=0