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在正三棱柱ABC-A1B1C1中,若AB=2,A A1=1,则点A到平面A1BC...
在正三棱柱ABC-A
1B
1C
1中,若AB=2,A A
1=1,则点A到平面A
1BC的距离为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024180248775592434/SYS201310241802487755924019_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024180248775592434/SYS201310241802487755924019_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024180248775592434/SYS201310241802487755924019_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024180248775592434/SYS201310241802487755924019_ST/3.png)
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