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三个平面两两垂直,它们的三条交线相交于一点O,点P到三个平面的距离之比为1:2:...
三个平面两两垂直,它们的三条交线相交于一点O,点P到三个平面的距离之比为1:2:3,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224921719145869/SYS201311012249217191458008_ST/0.png)
,则点P到三个平面的距离分别为( )
A.2,4,6
B.4,6,8
C.3,6,9
D.5,10,15
考点分析:
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D.
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△ABC中,
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,|
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C.
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D.
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224921719145869/SYS201311012249217191458003_ST/0.png)
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个单位而得
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