(20 1 1? As shown in the figure, thin-walled cylindrical containers with different bottom areas contain liquids A and B respectively, and the liquid level is flat. Known a and b

The liquid levels of A and B are the same, and the pressure at the bottom of the container is equal. According to the formula P=ρgh, the densities of liquids A and B are equal. After the same metal ball is put into two containers respectively, the volume of liquid discharged by the ball is the same, the area of nail bottom is large, and the height of liquid A in the container is small. According to the formula P=ρgh, the pressure of A on the bottom of the container is less than that of B.. So, both A and C are wrong.

It is known that liquid A and liquid B have equal pressure on the bottom of the container, and the bottom area of liquid A is larger than that of liquid B. According to F=pS, the pressure of liquid A on the bottom of the container is larger than that of liquid B. When an identical metal ball is put into two containers respectively, the liquid volume V displaced by the ball is the same, and the pressure of liquid at the bottom of the container increases △ f =△ ps =△ g △ hs = ρ gv, so the pressure of liquid A and B is increased.

So choose D.