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已知不等式组 http://picflow.koolearn.com/upload/papers/20140823/20140823163418209726.gif表示平面区域D,现在往抛物线 http://picflow.koolearn.com/upload/papers/20140823/20140823163418225449.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823163418240187.gif轴围成的封闭区域内随机地抛掷一粒小颗粒,则该颗粒落到区域D中的概率( )

发布时间:2021-07-16

A.http://picflow.koolearn.com/upload/papers/20140823/20140823163418256235.gif

B.http://picflow.koolearn.com/upload/papers/20140823/20140823163418272254.gif

C.http://picflow.koolearn.com/upload/papers/20140823/20140823163418303217.gif

D.http://picflow.koolearn.com/upload/papers/20140823/20140823163418318234.gif

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