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如图,△ABC是⊙O的内接三角形,AD⊥BC于D点,且AC=5,CD=3,AB=...
如图,△ABC是⊙O的内接三角形,AD⊥BC于D点,且AC=5,CD=3,AB=4
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102347004050235/SYS201311031023470040502021_ST/0.png)
,则⊙O的直径等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102347004050235/SYS201311031023470040502021_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102347004050235/SYS201311031023470040502021_ST/1.png)
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102347004050235/SYS201311031023470040502021_ST/2.png)
B.3
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102347004050235/SYS201311031023470040502021_ST/3.png)
C.5
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102347004050235/SYS201311031023470040502021_ST/4.png)
D.7
考点分析:
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