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将宽为2cm的长方形纸条折叠成如图所示的形状,那么折痕PQ的长是( ) A.cm...
将宽为2cm的长方形纸条折叠成如图所示的形状,那么折痕PQ的长是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519186583/SYS201310221643465191865009_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519186583/SYS201310221643465191865009_ST/0.png)
cm
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519186583/SYS201310221643465191865009_ST/1.png)
cm
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164346519186583/SYS201310221643465191865009_ST/2.png)
cm
D.2cm
考点分析:
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