触探
参考答案：
在外力作用下，使探头插入土层，根据贯入、回转、起拔时的阻力测定土的物理力学性质的测试方法。
David Shoemaker, the CEO of NBA China, was told that he_______ to speak louder to make himself______when giving a speech.
A．was hoped; understood
B．was expected; understood
C．was hoped; understand
D．wished; understood
设只包含根节点的二叉树的高度为0，则高度为k的二叉树的最小节点数为______。
