关于砌体结构设计的设计，有下列四项论点：
Ⅰ．当砌体结构作为刚体需验证其整体稳定性时，例如倾覆、滑移、漂浮等，分项系数应取0.9；
Ⅱ．烧结黏土普通砖砌体的线膨胀系数比蒸压粉煤灰砖砌体小；
Ⅲ．当验算施工中房屋的构件时，砌体强度设计值应乘以调整系数1.05；
Ⅳ．砌体结构设计规范的强度指标是按施工质量控制等级为B级确定的，当采用A级时，可将强度设计值提高5%后采用。
试问，以下何项组合是正确的？（）
A．Ⅰ、Ⅱ、Ⅲ
B．Ⅱ、Ⅲ、Ⅳ
C．Ⅰ、Ⅲ、Ⅳ
D．Ⅱ、Ⅳ
参考答案：D
解析：
解答如下：
根据《砌体结构设计规范》4.1.6条，论点Ⅰ错误。
依据规范表3.2.5-2，论点Ⅱ正确。
依据规范3.2.3条，论点Ⅲ错误。
依据规范4.1.1～4.1.5条的条文说明，论点Ⅳ正确。
综上所述，Ⅲ、Ⅳ正确，选择D项。
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| The year I went away to college was a very difficult transition (过渡期) for me. 1 is probably true with many people, I got quite homesick and 2 thought about going home. Although the 3 time for many students is getting 4 from home, my mailbox was frequently 5 . One day when I went to the mailbox, there was a postcard 6 at me. I sat down to read it, 7 a note from someone back home. 8 I became increasingly puzzled (困惑) as 9 postcards were like this. It was a full news report about a woman named Mabel and her new-bom baby. I took the card to my room and 10 about it. Several days later I 11 another postcard, and this one 12 news about Maybelline, Mabel's cousin. Soon after, another card arrived and then another, 13 full of news of different people. I began to 14 look forward to the next one, 15 to see what this author would come up with 16 . I was never 17 . Finally, the cards 18 coming, right about the time I had begun to feel 19 about college life. They had been such a happy distraction (调剂) that I have 20 all the postcards and still bring them out to read whenever I need a lift. | ||||
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