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已知点A(2,3),B(-3,-2).若直线l过点P(1,1)且与线段AB相交,...
已知点A(2,3),B(-3,-2).若直线l过点P(1,1)且与线段AB相交,则直线l的斜率k的取值范围是( )
A.
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B.
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C.k≥2或
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D.k≤2
考点分析:
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A.垂直于同一平面的两平面也平行
B.与两条异面直线都相交的两条直线一定是异面直线
C.过一点有且只有一条直线与已知直线垂直
D.垂直于同一直线的两平面平行
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直线mx-y+m+2=0经过一定点,则该点的坐标是( )
A.(-1,2)
B.(1,2)
C.(2,-1)
D.(2,1)
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在空间直角坐标系Oxyz中,点P(-2,0,3)位于( )
A.xoz平面内
B.yoz平面内
C.y轴上
D.z轴上
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sinx,cosx),
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223300337530607/SYS201311012233003375306017_ST/0.png)
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