单词拼写。

1. T_____ of families were killed and many children became orphans (孤儿).

2. He is so s_____ that no one can persuade him to do anything.

3. I have it on _____ (可信赖的) evidence that the hospital is going to be closed down.

4. My sister has just g from Beijing University.

5. She gave me a _____ (坚定的) look－the kind that said she would not change her mind.

6.  _____ (三分之二) of the books have been sold out so far.

7. When the e_____ came, it was as if the world was at an end.

8. The man who is shaking hands with my father is a_____ (法官).

9. After the terrible flood, the city was in r_____.

10. their dispute has not been _____ (最后, 终于) settled yet.

（三） 背景资料 某市政桥梁工程采用钻孔灌注桩基础：上部结构为预应力混凝土连续箱桥，采用钢管支架法施工。支架地基表层4.5m 厚杂填土，地下水位位于地面以下0.5m。 住墩承台基坑平面尺寸为10m×6m，挖深为4.5m，采用9m 长I20a型钢做围护，设一道型钢支撑。 土方施工阶段，由于场地内堆置土方、施工便道行车及土方外运行驶造成的扬尘对附近居民产生严重影响，引起大量投诉。 箱梁混凝土浇筑后，支架出现沉降，最大达5cm，造成质量事故。经验算，钢管支架本身的刚度和强度满足要求。 问题：

住墩承台基坑降水宜用何种井点，应采用那种排列形式？