问题 单项选择题

材质为Q235的焊接工字钢次梁,截面尺寸见图2-15、表2-7,腹板与翼缘的焊接采用双面角焊缝,焊条采用E43型非低氢型焊条,最大剪力设计值V=204kN,翼缘与腹板连接焊缝焊脚尺寸h(mm)取下列何项数值最为合理?提示:最为合理指在满足规范的前提下数值最小()。

A.2

B.4

C.6

D.8

答案

参考答案:C

完形填空

完形填空(2) 阅读下面短文,掌握其大意,然后从11~20各题所给的A、B、C和D项中,选出最佳选项,并在答题卷上将该项涂黑。

The theory of evolution was made by Charles Darwin. It has had a great      11       on the world today. It has caused many debates between religious authorities and those from the   12      community. This theory makes people think about their origins. It has changed the way in which they think about themselves in the environment. Charles Darwin collected and provided a lot of information to   13         his theory. His theory and research made him the most popular one in the scientific field of    14         .

Charles Darwin was born in 1809. He was the fourth child in his family. Much of Darwin’s childhood was spent   15     insects and reading books about        16       history. Charles Darwin was not a   17        student during his years at the medical college. He disliked what he was taught. But he   18       an interest in studying rocks and fossils.

Later, he had a chance to travel as a naturalist. It was this chance that made him begin his work on evolution. After a few years’ hard study, he wrote a book called The      19       of Species. In this book, Darwin explained his  20       about “natural selection” and “struggle for existence” .

11. A. effort                  B. effect                C. affect                      D. affection

12. A. scientific             B. social                C. abstract                   D. material

13. A. imagine              B. picture              C. prove                      D. discuss

14. A. heredity              B. physics              C. chemistry         D. evolution

15. A. raising         B. collecting          C. planting                   D. watching

16. A. natural         B. human              C. literature          D. universal

17. A. naughty              B. popular             C. incommunicative      D. good-tempered

18. A. found          B. realized             C. developed         D. announced

19. A. Origin         B. Beginning  C. End                        D. Result 

20. A. ways                  B. ideas                 C. opinions                  D. theory

单项选择题