单选题:如图所示,放在水平桌面上的容器A为圆柱形,容器B为圆锥形,两容器本身的质量和底面积都相同,装入深度相同的水后,再分别放人

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题目内容:
如图所示,放在水平桌面上的容器A为圆柱形,容器B为圆锥形,两容器本身的质量和底面积都相同,装入深度相同的水后,再分别放人相同质量的木块,如图所示,下列说法中正确的是(  )。

A.放入木块前,两容器对桌面的压力相等
B.放入木块前,由于A容器中的水多于B容器,所以A容器底部受水的压强大于B容器
C.放入木块后,两容器底部所受水的压力相等
D.放人木块后,B'容器底受水的压强大于A'容器底所受水的压强
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