如图所示,甲乙两个实心均匀正方体(V甲<V乙)分别放在水平地面上,它们对地面的压强相等,若将乙放在甲的上表面,甲对地面增加的压强为△p甲,若将甲放在乙的上表面,乙队地面增加的压强为△p乙,则( )
A:△p甲>△p乙
B:△p甲<△p乙
C:△p甲=△p乙
D:无法判断
函数y=ax﹣2+1(a>0,a≠1)不论a为何值时,其图象恒过的顶点为 ____.
None of them talked. They finished their meal in .