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同时向空中掷两枚质地完全相同的硬币,则出现同时正面朝上的概率为( ) A. B....
同时向空中掷两枚质地完全相同的硬币,则出现同时正面朝上的概率为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190200669446054/SYS201311011902006694460046_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190200669446054/SYS201311011902006694460046_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190200669446054/SYS201311011902006694460046_ST/2.png)
D.1
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