机车转向架的作用是()。
参考答案:承受机车上部重量、传递牵引力和制动力、缓和来自线路的冲击
It is _____ for her to finish that maths problem in such a short time, because she is so clever.[ ]
A. probable
B. impossible
C. likely
D. possible
舌损伤缝合最主要的是()
A.恢复舌头的长度
B.止血
C.细针细线缝合
D.恢复舌头的宽度
E.清创