在填土压实施工中，适用于大面积非黏性土回填压实的方法是( )。
A．振动压实法B．内燃夯实法C．羊足碾碾压法D．蛙式打夯机夯实法
参考答案：A
一棵二叉树第6层(根结点为第一层)的结点最多为______个。
Which of the following index represents small-company stocks
Which of the following is NOT true of meditation
A．It relieves the pain of cancer.B．It counteracts the effect of depression.C．It has mystic elements.D．It has long been used as a cure-all.
