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(2009•梧州)如图,正方形ABCD中,E为AB的中点,AF⊥DE于点O,则等...
(2009•梧州)如图,正方形ABCD中,E为AB的中点,AF⊥DE于点O,则
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230854470555152/SYS201310212308544705551017_ST/0.png)
等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230854470555152/SYS201310212308544705551017_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230854470555152/SYS201310212308544705551017_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230854470555152/SYS201310212308544705551017_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230854470555152/SYS201310212308544705551017_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230854470555152/SYS201310212308544705551017_ST/4.png)
考点分析:
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