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如图,在Rt△ABC中,∠ACB=Rt∠,CD⊥AB,D为垂足,且AD=3,AC...
如图,在Rt△ABC中,∠ACB=Rt∠,CD⊥AB,D为垂足,且AD=3,AC=3
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101719103141826/SYS201311031017191031418014_ST/0.png)
,则斜边AB的长为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101719103141826/SYS201311031017191031418014_ST/images1.png)
A.3
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101719103141826/SYS201311031017191031418014_ST/1.png)
B.15
C.9
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101719103141826/SYS201311031017191031418014_ST/2.png)
D.3+3
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101719103141826/SYS201311031017191031418014_ST/3.png)
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