试题与答案

根据《SDH长途光缆传输系统工程验收规范》，工程设计中采用的电信设备应取得信息产业部

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题型：单项选择题

题目：

根据《SDH长途光缆传输系统工程验收规范》，工程设计中采用的电信设备应取得信息产业部（）。

A.证明

B.通知

C.电信设备入网许可证

D.省设备入网许可证

答案：

参考答案：C

考点：通信设备安装工通信设备安装工题库
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题型：阅读理解
阅读理解.
Dear editor,
     I live in a beautiful city. Many visitors come to my city. There are so many colorful peacocks here.
     The peacocks mostly live on the grassland of Dongfeng Square. They are given food freely by visitors.  
They usually throw food to them, and don't think about at all whether the fool is right or not. Some of the
peacocks became ill, some even died after eating the bad food given by the visitors.
     I'm sure most of the visitors who throw food to the peacocks really like the birds, but don't realize that
they may be doing them harm.
     The visitors should be told that what they have done is very harmful to the birds, and this kind of thing
must be stopped.
     Perhaps we can build some small shops beside Dongfeng Square to sell peacock food. For us every
person, it is our duty to give morelove to these beautiful birds and to look after, them carefully.
                                                                                                                                           Yours ,
                                                                                                                                          Sun Yan
1. Many visitors came to the writer's city to         .      
A. do some shopping                
B. see beautiful peacocks
C. throw them some bad food          
D. eat nice food
2. Some peacocks became ill and died because some visitors           .        
A. didn't give them any food          
B. gave them too much food
C. threw them some bad food          
D.loved them and played with them
3. Some shops can be built beside Dongfeng Square so that they may            .

A. sell food for visitors                  
B. sell food for peacocks
C. make the square more beautiful        
D. have the beautiful birds

4. From the passage we know people should             .    
A. live and play with the birds        
B. stop the birds from eating too much
C.give right food to the birds        
D. give more food to the birds
5. We can guess the writer of the letter, Sun Yan, may be a            .     
A. visitor      
B.shopkeeper    
C.doctor      
D.student
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题型：问答题

A、B、C、D、E、F六种短周期主族元素的原子序数依次增大，且知：

①A与B能形成多种气态化合物，B与D能形成两种常见气态化合物，D与E能形成两种离子化合物；

②B、C、D是同一周期相邻的三种元素，且有C和E的原子序数之和等于A和F的原子序数之和；

③E元素的原子半径大于F元素的原子半径．

请回答：

（1）E元素在元素周期表的位置是______，E与D按原子个数为1：1形成的化合物的电子式是______，所含的化学键有______．

（2）B和D形成的两种气态化合物中含有三个原子的化合物的结构式是______，将其通入足量NaAlO2溶液，现象是______，离子方程式为______．

（3）由A、C、F三种元素能组成一种离子化合物，检验其阳离子的方法是（用离子方程式表示）______．

（4）具有相同的原子数和相同的电子数的不同粒子称为等电子体．写出由上述各种元素形成的粒子中与C元素的单质互为等电子体的一种粒子的化学式：______．
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