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随机掷两枚硬币,落地后全部正面朝上的概率是( ) A. B. C. D.
随机掷两枚硬币,落地后全部正面朝上的概率是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023211930586793860/SYS201310232119305867938009_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023211930586793860/SYS201310232119305867938009_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023211930586793860/SYS201310232119305867938009_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023211930586793860/SYS201310232119305867938009_ST/3.png)
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B.
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C.
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D.
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A.
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B.
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C.
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D.
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B.
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C.
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D.
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