如图所示,水平桌面上两个相同容器中分别放有深度相同的甲、乙两种液体,液体密度关系为ρ甲<ρ乙,则液体的质量m、液体对容器底部的压强p底、容器对桌面的压力F、容器对桌面的压强p桌等关系,正确的是( )
Research findings have shown that about 20 percent of people only 10 percent can be ____(分类) as “early birds”.