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如果方程(p>0)表示双曲线,则下列椭圆中与该双曲线共焦点的是( ) A. B....
如果方程
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697007_ST/0.png)
(p>0)表示双曲线,则下列椭圆中与该双曲线共焦点的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697007_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697007_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697007_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697007_ST/4.png)
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与y轴相切且和曲线x
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B.y
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当m∈[-2,-1]时,二次曲线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697005_ST/0.png)
的离心率e的取值范围是( )
A.[
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697005_ST/1.png)
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B.[
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697005_ST/2.png)
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C.[
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697005_ST/3.png)
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D.[
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697005_ST/4.png)
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如果椭圆
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697004_ST/0.png)
的弦被点(2,2)平分,那么这条弦所在的直线的方程是( )
A.x+4y=0
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D.x-4y-10=0
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若平面α与β的法向量分别是
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697003_ST/0.png)
,则平面α与β的位置关系是( )
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已知空间四边形OABC,其对角线是OB,AC,M,N分别是对边OA,BC的中点,点G在线段MN上,且MG=3GN,用基底向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697002_ST/0.png)
表示向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697002_ST/1.png)
应是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697002_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697002_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224517685169763/SYS201311012245176851697002_ST/4.png)
D.
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