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如图,在平面直角坐标系中,点A在第一象限,⊙A与x轴相切于B,与y轴交于C(0,...
如图,在平面直角坐标系中,点A在第一象限,⊙A与x轴相切于B,与y轴交于C(0,1),D(0,4)两点,则点A的坐标是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160539762283005/SYS201310221605397622830008_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160539762283005/SYS201310221605397622830008_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160539762283005/SYS201310221605397622830008_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160539762283005/SYS201310221605397622830008_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160539762283005/SYS201310221605397622830008_ST/3.png)
考点分析:
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