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将如图所示的圆心角为90°的扇形纸片AOB围成圆锥形纸帽,使扇形的两条半径OA与...
将如图所示的圆心角为90°的扇形纸片AOB围成圆锥形纸帽,使扇形的两条半径OA与OB重合(接缝粘贴部分忽略不计),则围成的圆锥形纸帽是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230240231/SYS201310221640102302402011_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230240231/SYS201310221640102302402011_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230240231/SYS201310221640102302402011_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230240231/SYS201310221640102302402011_ST/images3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230240231/SYS201310221640102302402011_ST/images4.png)
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