观察法收集资料的特点是（）。

A.社会现象的收集方法

B.非语言资料的收集方法

C.间接的资料收集方法

D.节省时间不用记录

E.不准确的资料收集方法

What’s the attitude of many old senior officers for a minor fire?（）

A.They would like to call out all hands out for it

B.They would rather handle themselves, then call out all hands

C.They prefer to put it out by themselves

D.They think it is difficulty to call out all hands for a minor fire