问题 单项选择题

某电力炼钢车间单跨厂房,跨度30m,长168m,柱距24m,采用轻型外围结构。厂房内设置两台Q=225/50t重级工作制软钩桥式吊车,吊车轨面标高26m,屋架间距6m,柱顶设置跨度为24m的托架,托架与屋架平接。沿厂房纵向设有上部柱间支撑和双片的下部柱间支撑,柱子和柱间支撑布置如图1-5-6(α)所示。厂房框架采用单阶钢柱,柱顶与屋面刚接,柱底与基础假定为刚接,钢柱的简图和截面尺寸如图1-5-6(b)所示。钢柱采用Q345钢,焊条用E50型,柱翼缘板为焰切边。根据内力分析,厂房框架上段柱和下段柱的内力设计值如下:上段柱:M1=2250kN·m;N1=4357kN;V1=368kN下段柱:M2=12950kN·m;N2=9820kN;V2=512kN

阶形柱采用单壁式肩梁,腹板厚60mm,肩梁上端作用在吊车柱肢腹板的集中荷载设计值F=8120kN,吊车柱肢腹板切槽后与肩梁之间用角焊缝连接,采用h=16mm,为增加连接强度,柱肢腹板局部由-944×25改为-944×30,试问,角焊缝的剪应力(N/mm),应与下列何项数值最为接近?提示:该角焊缝内力并非沿侧面角焊缝全长分布。()

A.95 

B.155 

C.173 

D.189

答案

参考答案:D

单项选择题
阅读理解

第二部分阅读理解:(共两节, 满分50分)

Ⅲ. 第一节(共20小题; 每小题2分, 满分40分)阅读下列短文, 从每题后面所给的选项

(A、B、C和D)中,选出最佳选项,并在答题卷上将该项涂黑。

A

We may encounter various setbacks (挫折) in our life and these setbacks  may never repeat themselves. They appear differently in different periods of life.

Students may have problems in learning, for example, the goal and motivation of learning, the method and attitude of study, and their school performances as well. If they fail to deal with these matters properly, they may have problems in study and even develop psychological problems.

Job-hunting, career choosing, capability and unemployment are matters often leading to

psychological problems of the contemporaries (当代人). How to choose a career, how to make a plan for life and how to keep competence in position and for promotion, etc., these are all factors to bring us worries and anxieties.

Interpersonal relationship leads to one of the major psychological setbacks of the human being. The symptoms show that it is hard to get along with others, lacking necessary skills to communicate with others. These may lead to sad feelings of loneliness, bitterness, short of concerns and cares.

The old often suffer from supersession of the old by the new, stepping down from leading positions, retirement, being isolated and helpless. How to look at these rules of law in life, get used to the change, handle domestic emptiness when children grow up and the bitterness facing death of the beloved, all these have to be dealt with properly, to avoid the development of depression and disease.

Now, it comes to the key — how to handle them. 

Keeping a good mood:

Do not make your ambitions too high and never seek for perfection when doing things.

Do not expect too much from others. Otherwise, you will be disappointed if she/he fails to meet your expectation.

When angry, you’d better calm yourself so as to avoid doing something stupid.

Be tolerating and forgiving. Toleration and forgiveness can either smooth your own mood or benefit interpersonal relationship.

When you encounter setbacks you’d better leave it alone and begin to do something you like, for example, go to the theater or take exercise, etc.

You may ease yourself by telling your unhappiness to your good friends, parents, teachers or even making a telephone call to psychological hotlines.

Do something good for others. In this way, you will not only forget your worries but also find your own value and at the same time make friends with others.

To evaluate your ability and role properly, thus you will not develop unnecessary psychological pressure on yourself.

41. The writer is mainly trying to tell us _______.

A. who knows about setbacks           B. how to deal with setbacks 

C. when we have setbacks               D. what causes various setbacks

42. Setbacks may result from the following EXCEPT _______.

A. learning problems at school            B. weak competence in career

C. poor skills in communication         D. the rules of law in life

43. Guess the right meaning of the underlined word “supersession”.

A. depression                                 B. replacement

C. loneliness                                  D. emptiness

44. From the “key” given by the writer, we can infer that _______.

A. anger can be turned into useful power

B. those without ambitions are the happiest

C. psychological problems can be solved by yourself

D. doing something good for others adds to your worries