问题 问答题 简答题

管理节能主要体现十四方面

答案

参考答案:

考核评价制度、标准体系建设、统计制度、统计指标体系、项目节能评估和审查制度、落后产品、产能淘汰制度、认证管理力度、电力需求侧管理

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     My name is Jane Eyre and my parents died when I was a baby. For ten years I lived a__1__life with my aunt and cousins who treated me unfairly. My cousins teased me and my aunt never showed me any__2__.The only person who cared about me was the maid, Bessie. One day my cousin John __3__me: "You
should go and beg, not live with rich folks like us!" After fighting with him I was locked in a room, where I
__4__for hours crying.
     Things __5__the same until a tall gentleman called Mr Brockehurst came to visit. My aunt told me that
I was going to a school __6__by the gentleman. "Train her to be useful and humble," said Aunt. Two days
later I __7__my home.
     At first my __8__at Lowood School was easy. The food was bad and I was often cold but I made
__9__and enjoyed studying. But after an illness killed several students, new owners __10__the school and
life improved. Six years later I __11__ a teacher and was very happy. But eventually(最后) I felt that I
should explore more of the world and found a job as a private teacher in a __12__.
     Before I left Lowood, I was__13__by Bessie, who told me that seven years ago my father's brother had come __14__me but left again to go abroad. "He looked like quite a gentleman," said Bessie. I wondered if he would ever look for me again.
     My new life __15__at Thornfield Hall, a large country house, __16__a little girl called Adele. She was
the adopted(被收养的) daughter of the owner of the house, Mr Rochester. He __17__stayed at Thornfield and __18__my time was mainly spent with Adele and the servants. My life was quite happy now although
there was something__19__about my new home. Often I heard odd(奇怪的) sounds __20__from the top
floor of the house.
( )1. A. happy      
( )2. A. food        
( )3. A. shouted at  
( )4. A. lived      
( )5. A. appeared    
( )6. A. built      
( )7. A. built      
( )8. A. food        
( )9. A. noise      
( )10. A. took over  
( )11. A. turned    
( )12. A. school    
( )13. A. taught    
( )14. A. looking for
( )15. A. stopped    
( )16. A. showing    
( )17. A. often      
( )18. A. yet        
( )19. A. interesting
( )20. A. come      
B. long      
B. love      
B. cried over
B. stayed    
B. worked    
B. designed  
B. reached    
B. life      
B. friends    
B. took up    
B. met        
B. home      
B. visited    
B. looking after
B. continued  
B. teaching  
B. hardly    
B. so        
B. good      
B. drop      
C. sad        
C. method      
C. found out  
C. studied    
C. seemed      
C. owned      
C. left        
C. book        
C. mistakes    
C. took off    
C. became      
C. library    
C. brought    
C. looking into
C. started    
C. searching  
C. happily    
C. still      
C. instructive
C. fall        
D. comfortable
D. schooling  
D. talked with
D. beat      
D. remained  
D. opened    
D. sold      
D. study      
D. faces      
D. took away  
D. found      
D. country    
D. required  
D. looking at
D. remained  
D. wanting    
D. quietly    
D. though    
D. strange    
D. go        
实验题

某化学课外小组同学,用如图所示实验验证质量守恒定律。

 

(1)某甲同学用A装置探究质量守恒定律,实验步骤如下:

如图将烧杯放在天平上用砝码平衡,然后倾斜烧杯使硫酸铜溶液与铁钉接触,一段时间后再把烧杯放在天平上。

①发生反应的化学方程式为                                                                                

②最后天平的指针(填序号)                                    (a.偏左 b.偏右 c.不偏转 d.无法预测)。

(2)乙同学用B装置研究质量守恒定律,实验步骤如下:

如图将烧杯放在天平上用砝码平衡,然后倾斜烧杯使盐酸与碳酸钠粉末接触,一段时间后再把烧杯放在天平上。发现天平的指针偏右。

①造成天平的指针向右偏转的原因是                                                           

②若将本实验中的烧杯替换成带有气球的锥形瓶,如上图C所示,其他操作不变,最后天平仍不平衡。可见,在验证质量守恒定律时,若利用有气体参加或有气体生成的化学反应来设计实验,在装置设计方面应做到                                               

(3)在化学反应前后,一定不变的是(填序号)                                             

①元素种类 ②原子种类 ③原子数目 ④分子种类 ⑤分子数目 ⑥物质的总质量

(4)应用质量守恒定律可以确定反应物或产物的化学式。在载人宇宙飞船中,一般都安装盛放过氧化钠(Na2O2)颗粒的装置,它的作用是再生氧气,供宇航员呼吸,反应的化学方程式为2 Na2O2 + 2CO2 = 2X + O2 。则X的化学式为                         

(5)已知化学反应A+3B=2C+2D。在密闭容器中放入A、B、C、D,在一定条件下反应一段时间后,测得容器内各物质质量如下表:

则B和C的相对分子质量之比为