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已知平面上不共线的四点O,A,B,C.若,则的值为( ) A. B. C. D....
已知平面上不共线的四点O,A,B,C.若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135402125/SYS201311031027391354021006_ST/0.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135402125/SYS201311031027391354021006_ST/1.png)
的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135402125/SYS201311031027391354021006_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135402125/SYS201311031027391354021006_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135402125/SYS201311031027391354021006_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739135402125/SYS201311031027391354021006_ST/5.png)
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