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【多选题】
长方体物体A受到的重力为G，放入水中后如图所示，处于漂浮状态，A的下表面距容器底的高度为h，露出水面的体积为物体A总体积的 ，若用一个竖直向下的压力F 1 压物体A，使其浸没在水中后静止，这时物体A的下表面受到水竖直向上的压力为F 2 。下列说法正确的是 [     ]
A.
物体A漂浮时，下表面受到水的压强是ρ 水 gh
B.
竖直向下的压力F 1 和重力G的比值为2：3
C.
物体A浸没后，它的作用力的合力大于G
D.
F 1 、F 2 的合力等于G
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