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(2001•宁夏)已知⊙O的一条弦AB与直径CD垂直相交于E,并有CE=1,DE...
(2001•宁夏)已知⊙O的一条弦AB与直径CD垂直相交于E,并有CE=1,DE=3,那么弦AB的长等于( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180414764/SYS201310191054291804147010_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429180414764/SYS201310191054291804147010_ST/1.png)
C.2
D.4
考点分析:
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