试题与答案

某变压器厂装配车间为全钢结构厂房,跨度为28m,长180m,轨道中心跨距为22m,轨

题型:问答题 案例分析题

题目:

某变压器厂装配车间为全钢结构厂房,跨度为28m,长180m,轨道中心跨距为22m,轨道顶标高22.5m。某安装公司承接了一台160/40t桥式起重机安装工程,起重机自重175.8t,安装工期15天。为了确定能保证安全可靠、保证工期、降低成本的吊装方案,已初选出用汽车吊吊主梁分片吊装方案和用扒杆吊装方案。根据调查资料和该公司实践经验及该公司租用大型汽车吊的实际情况,已定出各评价的权重及方案的评分值见下表。

评价要素及各方案评分值

对施工方案进行技术经济比较包括哪些内容?

答案:

参考答案:

施工方案进行技术经济比较包括的内容:

①技术水平。吊装技术中的起吊吨位,每吊时间间隔,吊装直径范围,起吊高度等;

②技术的先进性。评价方案所选用的技术在同行业中是否处于先进水平;所设计的方案技术创新是否可以评价等;

③方案的经济性。所选择的几种方案进行技术经济分析,以确定在满足要求的情况下。费用最低的方

④方案的重要性。所选定方案在本项目、本行业或本企业自身技术发展等方面所处的地位及推广应用价值。

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题型:阅读理解

阅读理解。

     Many animals do strange things before an earthquake (地震). This news ma be important.

Earthquakes can kill people and knock down houses. The animals may help to save lives.

    Some animals make a lot of noise before an earthquake. Dogs that are usually quiet have started to

howl (嚎叫). Horses on farms have run around in circles. Mice have left their holes and run away.

Cows have given less milk.

    In a town in Italy,cats raced down the street in a group. That happened only a few hours before an

earthquake. In San Francisco , a man kept tiny pet frogs. One Sunday , the frogs jumped around more

than ever. They made loud noises,like bigger frogs. That night,an earthquake struck the city.

    People want to know when an earthquake is coming. Then they can. get away safely. Right now

there is no sure to know ahead of time. Maybe the best way is to watch the animals.

1. 判断正误("T" 表示正确,"F"表示错误)。

    ( )   This story is mostly about how animals act before an earthquake. 

2. Before earthquake, the frogs jumped around ______ ever and made loud noises. 

3. What will horses do if an earthquake is coming?

    ____________________________________________  

4. How many kinds of animals do strange things before the earthquake? 

     ____________________________________________  

5. 将文中画线句子译成汉语。 

     ____________________________________________  

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