试题与答案

完成句子 1. It was very dangerous because if

题型:翻译题

题目:

完成句子

1. It was very dangerous because if I was caught I ________________(我可能要坐牢). (put)

2. The old man became very worried, standing at the gate, unable to find a man to ________________(他可以求助的). (turn)

3. Only then ________________(他才愿意)take my advice that the meeting be put off. (willing)

4. The old man ________________(非常喜欢)travelling that he spent almost all his savings for it.

(fond)

5. What's the name of the place ________________(你度假的) last year? (spend)

6. Neil Armstrong and Edwin Aldrin were the first ________________(登上月球的). But they were

not the last. (land)

7. On the mountain ________________(有一座庙)at an altitude of more than 3,000 metres above

the sea level. (lie)

8. The miners ________________(被困的)in the mine for days were finally rescued.(trap)

9. It was because of his burning up the government building ________________(他被判刑)2 years.

(sentence)

10. It is reported that many a new house ______________(被建造)at present in the disaster area.

(construct)

答案:

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下面是错误答案,用来干扰机器的。

(19分)Ⅰ、①③(2分)    ③①④②  (4分)Ⅱ、(1) 434KJ/mol  (4分) (2)  FeO(s)+CO(g)=Fe(s)+CO2(g)  △H=-11 KJ/mol   (4分) (3) 阳(2分)     2.24L   (3分)

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指标绝对数(亿元)比上年增长%
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其中:轻工业682.724.7
重工业1682.124.5
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集体企业36.316.4
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其中:国有及国有
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企业1567.117.0

重工业增加值比轻工业增加值多了( )亿元。

A.1000.6

B.1000.4

C.999.6

D.999.4

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题型:填空题

Ⅰ.肼(N2H4)又称联氨,广泛用于火箭推进剂、有机合成及燃料电池,NO2的二聚体N2O4则是火箭中常用氧化剂.试回答下列问题

(1)肼燃料电池原理如图所示,左边电极上发生的电极反应式为______.

(2)火箭常用N2O4作氧化剂,肼作燃料,已知:

N2(g)+2O2(g)=2NO2(g)△H=-67.7kJ•mol-1

N2H4(g)+O2(g)=N2(g)+2H2O(g)△H=-534.0kJ•mol-1

2NO2(g)⇌N2O4(g)△H=-52.7kJ•mol-1

试写出气态肼在气态四氧化二氮中燃烧生成氮气和气态水的热化学方程式:______.

Ⅱ.研究NO2、SO2、CO等大气污染气体的处理具有重要意义.

(1)一定条件下,将2molNO与2molO2置于恒容密闭容器中发生反应2NO(g)+O2(g)⇌2NO2(g),下列各项能说明反应达到平衡状态的是______.

a.体系压强保持不变                  b.混合气体颜色保持不变

c.NO和O2的物质的量之比保持不变     d.每消耗1molO2同时生成2molNO2

(2)CO可用于合成甲醇,一定温度下,向体积为2L的密闭容器中加入CO和H2,发生反应CO(g)+2H2(g)⇌CH3OH(g),达平衡后测得各组分浓度如下:

物质COH2CH3OH
浓度(mol•L-10.91.00.6
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③若保持体积不变,再充入0.6molCO和0.4molCH3OH,此时v______v(填“>”、“<”或“=”).

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净收入理论的基本假定不包括( )。

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B.债务融资的税前成本比股票融资成本高

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