粗锉刀的齿距为2.30~0.83mm。
参考答案:对
---What’s in the box?
---There ____some oranges in it.
A. is B. are
C. was D were
高处坠落伤,伤后即出现生命功能紊乱,眼球固定,瞳孔多变,高热,昏迷深且持久,应考虑为()。
A.脑挫伤
B.脑震荡
C.颅内血肿
D.原发性脑干损伤
E.对冲伤