第24题: [多项选择]屋架上弦横向水平支撑的作用是______。 A. 保证屋架上弦的侧向稳定 B. 增强屋盖的整体刚度 C. 防止屋架下弦的侧向振动 D. 作为山墙抗风柱的柱顶水平支座，承受由山墙传来的风荷载和其他纵向水平荷载，并将其传至厂房的纵向柱列 参考答案:A,B,D
第25题: [简答题]请就下述内容写一封投拆信： 我叫李淑敏，上个月去上海出差时，在书店买了一本法汉词典。回到家后仔细翻阅时发现缺了几十页，非常恼火。随信将词典寄回，要求换一本好的并尽快寄来。 参考答案:
To Whom it May Concern,
I am writing the letter to complain of a French-Chinese dictionary which I bought in your shop last month when I was in Shanghai on business. When I got home, however, I found dozens of pages of the dictionary were missing. I felt very upset. Now I send you the dictionary with this letter and strongly wish that you would change a perfect one and send it to me as soon as possible.
Yours truly
Li Shu-min
