调查研究材料的整理工作的具体步骤是什么？

已知某个网络的掩码是255.255.248.0，那么下面属于同一网段的是（）.

A.10.110.16.1和10.110.25.1

B.10.76.129.21和10.76.137.1

C.10.52.57.34和10.52.62.2

D.10.33.23.2和10.33.31.1

小题1:She did her homework during the sports meeting. (改为否定句)

She                her homework during the sports meeting.

小题2:We watch TV four times a week.(对划线部分提问)

                  do you watch TV?

小题3: His bike is new.  My bike is newer. (合并为一句)

My bike is newer ________ ________.

小题4:这个单词是以 “a”开头（完成译句）

This word ________ ________ “a”

Apart from being applied in such fields _______ communication, finance and trade, computers also

play an very important part in making mobile phones, medical operations ________ in space

exploration.      [ ]

A. like; as long as  

B. as; as well as  

C. like; as good as  

D. as; as far as

运用问卷法进行研究要注意哪些问题?

重介质选矿时，作为分选介质的悬浮液，在工艺性质上应有哪些特点（）。

A、易回收和净化

B、易氧化

C、稳定性好

D、粘度低