试题与答案

计算题:已知某丁二烯装置第一萃取塔溶剂进料量为110t/h,原料碳四进料量14.0t

题型:问答题 简答题

题目:

计算题:已知某丁二烯装置第一萃取塔溶剂进料量为110t/h,原料碳四进料量14.0t/h,压缩机返回量3.8t/h,抽余碳四采出量6.5t/h,试以物料衡算求第一萃取B塔釜液排出量?

答案:

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参考答案:Ca(HCO3)2—→CaCO3+H2O+CO2↑;Mg(HCO3)2—→Mg(OH)2↓+2CO2↑

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题型:选择题

小岗村人一直是我国农村脱贫致富的先行探路者和改革实验者。1978年18户农民决定“分田到户”,揭开了中国农村家庭承包经营责任制的序幕;为了推行现代化农业产业化经营方式,2006年元月,该村又决定重新走合作经济道路。材料说明[ ]

①改革是在主观与客观的矛盾运动中前进的

②发挥主观能动性可以不断地创造致富的新经验和规律

③社会实践的发展不断提升人们对致富规律的认识

④致富决策的正确与否取决于主观能动性的充分发挥

A、①②

B、②③

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题型:阅读理解

阅读理解。

     If there is one thing I'm sure about,it is that a hundred years later we will still be reading newspapers.

It is not that newspapers are a necessity. Even now some people get most of their news from television or

radio. Many buy a paper only on Saturdays or Sundays. But for most people,reading a newspaper has

become a habit passed down from generation to generation.

     The nature(特征) of what is news may change. What basically makes news is what affects our

lives-the big political stories,the coverage(报道) of the wars,earthquakes and other disasters,will

continue much the same. I think there will be more coverage of scientific research,though,the research

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You will probably be able to choose from a menu and make up your own newspaper by picking out the

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     I think people have got it wrong when they talk about competition between the different media. They

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newspapers,but that hasn't happened. What is read on the printed page lasts longer than pictures flashed

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1. What is the best title for the passage?

A. The Best Way to Get News        

B. The Changes of Media

C. Make Your Own Newspaper        

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A. more big political affairs,wars and disasters will make news

B. newspapers will not be printed in publishing houses any longer

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A. Sports and international news.      

B. A menu of important news.

C. The most important news.          

D. What you are interested in.

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题型:单项选择题

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关于A房地产公司未如期动工开发,下列说法正确的是( )。

A.因其迟延动工满2年,土地管理部门可以向其征收相当于土地出让金20%以下的闲置费

B.因其迟延动工满2年,土地管理部门可以无偿收回土地使用权

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D.前期资金不足不属于迟延动工的豁免原因,因此,土地管理部门必须收回该土地使用权

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