试题与答案

绘图题:画出三相高压并联电容器补偿的安装原理图。

题型:问答题 简答题

题目:

绘图题:画出三相高压并联电容器补偿的安装原理图。

答案:

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题型:问答题

某施工项目需要组合钢模,组合钢模周转利用率为85%,现租用钢模5000m2,月租金4元/m2;由于加快施工进度,实际周转利用率达到90%;该项目材料储备资金是根据日平均用量、材料单价和储备天数(即从采购到进场所需要的时间)计算的。上述任何一个因素的变动,都会影响储备资金的占用量,现已知钢材的储备资金计划与实际情况如表7-31所示。
表7-31 钢材储备资金计划与实际对比表

项目单位计划实际差额

日平均用量

材料单价

储备天数

储备金额

t

万元

50

4000

10

200.00

60

4200

8

201.60

10

200

-2

1.6

[问题]

根据表中数据,分析日平均用量、单价和储备天数等因素的变动对钢材储备资金的影响程度,并指出影响储备资金的关键因素。

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题型:填空题

(15分)现有金属单质A、B、C和气体甲、乙、丙及物质D、E、F、G、H,它们之间能发生如下反应(图中有些反应的产物和反应的条件没有全部标出)。F的水溶液为浅绿色。物质D的焰色为黄色

回答下列问题:

(1)写出下列物质的化学式:A               、丙               

(2)写出下列反应离子方程式:

反应③                        

反应⑤                         

(3)写出G溶液与金属 C反应的离子方程式                           

若该方程式是一套原电池装置的总反应式,则该原电池负极反应式为        ,正极反应式为:                       

(4)描述F溶液中滴加D溶液后的现象                                 ,写出最后生成H的化学方程式                                         

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题型:完形填空
完形填空
The future belongs to those who believe in the beauty of their dreams.
                                                                                                       -Eleanor Roosevelt
     My home is a place of great beauty and agricultural richness, as well as of war and natural disasters.
When I was only fourteen years old, I was filled with__1__in spite of the terrible surroundings.The
families living here, who tried to make their living from the land, __2__great losses.
     I felt sorry especially for the__3__, but I__4__to be hopeless.I decided that where I was, I could
do__5__to help them.I began knocking on every door and saying to each person who__6__my knock,
"I know that you are__7__and give the birds that come to your yard a little__8__.Please consider me
your bird.Give me only a handful of rice each week when I come to your__9__.I will take it to the
temple where it can be given to the__10__children."
      No one seemed to__11__giving me a handful of rice, even__12__they had little themselves.On
Sunday, I would go to the__13__and give my handfuls of rice to the monks to__14__to the children.
      One day, I came to a house that had__15__to give.I told my story and asked if I could be their bird.
The woman called her daughters, and__16__gave me fifty cents, as well as the handful of rice!I began to
ask for__17__and rice from the other "bird feeders", and they gave them to me.Everyone was happy to
be helping those who were suffering, even__18__only this small way.The temple was soon able to help
everyone who came to them for food and clothing.
     "Consider me your bird." My__19__idea had not stopped the war, but anyway, it was__20__some
peace.
( )1. A. sorrow        
( )2. A. suffered      
( )3. A. peasants      
( )4. A. wanted        
( )5. A. something      
( )6. A. said          
( )7. A. glad          
( )8. A. water        
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( )10. A. brave        
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( )12. A. where      
( )13. A. village      
( )14. A. give in      
( )15. A. much      
( )16. A. every      
( )17. A. help        
( )18. A. by        
( )19. A. foolish      
( )20. A. creating    
B. hope        
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B. failed      
B. everything  
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B. kind        
B. money        
B. room        
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B. that        
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B. give up      
B. little      
B. each        
B. clothing    
B. with        
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B. mending      
C. comfort    
C. covered    
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C. many        
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