下列骨折中最不稳定的类型是
A．嵌插骨折
B．斜骨折
C．青枝骨折
D．横骨折
E．裂缝骨折
参考答案：B
根据句意用所给词的适当形式填空。
1.Where is ________ (you) computer game?
2.________ (her) is my good friend.
3.________ (thank) for these things.
4.________ (he) CD is in the drawer.
透平油主要作用？
