化学烧伤的程度与化学物质的哪些因素有关()
A.性质
B.与眼接触时间
C.浓度
D.pH值
E.渗透力
参考答案:A, B, C, D, E
A lot of people tried their best, but _______ people won the price. [ ]
A. a few
B. few
C. little
D. a little
In which situation could a vessel most easily capsize?()
A.Running into head seas
B.Running in the trough
C.Running with following seas
D.Anchored with your bow into the seas