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问题 计算题

在足量浓硝酸中加入3.84gCu片，反应完全后，使产生的气体（只含有一种气体）通入800 mL H2O中充分反应，设反应后溶液体积不变。

（1）写出产生的气体通入水中的化学反应方程式，并指出氧化剂与还原剂质量之比；

（2）试求将气体通入水中充分反应后得到的溶液的物质的量浓度。

答案

解：（1）3NO2 + H2O===2HNO3 + NO； 1:2

（2）Cu + 4HNO3=== Cu(NO3)2 + 2NO2↑+ 2H2O 

          1                                          2

        mol                                x = 0.12 mol

3NO2 + H2O = 2HNO3 + NO

   3                     2

0.12 mol            y = 0.08 mol 

问答题

简述消防应急照明和疏散指示系统选择应遵循的原则。
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完形填空

第二节 语法填空（共10小题;每小题1.5分，满分15分）

阅读下面短文，根据上下文填入适当的词语，或使用括号中的词语的适当

形式填空，并将答案填写在答题卡上标号为31~40的相应位置。

Gandhi, an Indian national hero, was honored  (31)          the father of the Indian nation. He has been respected and beloved  (32)            the Indians.

He was born in India in 1869. Following the local custom, he got married     (33)            the age of 13. In 1888 he sailed to England, where he studied law for three years and became a lawyer. On his return to India, he was sent to South Africa to work on a law case.

In South Africa he  (34)             (surprise) found the problem of racial discrimination was serious. There he formed an organization and started a magazine to fight  (35)          equal rights.

Gandhi returned to India in 1915, when India was  (36)            (control) by the British. He led the Indians to fight for an end to the British rule and        (37)            (depend) for his country. In the political movement many Indians  (38)            (include) Gandhi were put in prison. However, the struggles never stopped. The British government had to give  (39)           and India won its independence in 1947.  (40)           (fortunate)， Gandhi was shot by an Indian who opposed his views and died on January 30th, 1948.
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