带传动具有缓和冲击和振动,具有吸振能力,并能保证严格的传动比。( )

题型:判断题

问题:

带传动具有缓和冲击和振动,具有吸振能力,并能保证严格的传动比。( )

考点:电气设备安装工中级电气设备安装工中级
题型:判断题

下列问题中,不属于地理问题的是[ ]

A.我国新疆生产的瓜果为什么特别甜

B.酷寒的南极大陆为什么沉睡着万顷煤田

C.近代中国人何时站起来了

D.昔日的海洋如今为什么变成了高耸的山峰

题型:判断题
脱式计算
5
7
-
5
8
)÷
5
56

1
6
×
3
8
)×24

2
3
÷(1-
4
9
题型:判断题
完形填空
     About five years ago I began to study at a new school, when my family moved to Iowa. I was just a
little  1  , wondering whether I could get on well with my classmates.
     Lucy, a girl in my   2  , who I thought wasn't ready to accept a  3   girl, didn't like me from the start.  4  , I was pretty sure she hated me. When I asked her a question, I could  5   she thought I was a total
fool.
    My teacher made us  6   next to each other for the last term. Lucy was not happy. However, I kept
  7   at her, though she rolled her eyes, and I kept telling her that she was beautiful.
     Finally, Lucy let me  8   to her, even when her friends were around.She  9   telling me how beautiful I
looked. I still remember the  10   time when she smiled at me and said that, and I smiled right back,
saying  11   to her. One day Lucy invited me over to her house, and talked to me all the time  12   her
other friends. That day Lucy, the girl who had hated me, called me her best deskmate. After that, we  13   
friends for years.
     I moved to Arizona later, but I will never  14   Lucy.I still remember she considered me her  15   at
first. During that time it felt like I was  16   my time, and losing my dignity (尊严), but I still smiled at Lucy
even when she  17   me.I'm not stupid; I didn't think she was  18   in doing those things, but I still put up
with it. And finally we became great friends.
     Not long ago, I read the  19   of Abraham Lincoln, "Am I not destroying my enemies when I make
friends of them?" I smiled, thinking of
     Lucy. It just  20   me how great a friend I used to have.
( )1. A. sad          
( )2. A. school       
( )3. A. positive     
( )4. A. Usually       
( )5. A. describe      
( )6. A. sit          
( )7. A. shouting      
( )8. A. write        
( )9. A. started      
( )10. A. rare         
( )11. A. hello       
( )12. A.according to  
( )13. A. served       
( )14. A. forget       
( )15. A. enemy       
( )16. A. changing    
( )17. A. took care of
( )18. A. right       
( )19. A. books       
( )20. A. taught       
B. surprised       
B. class           
B. successful    
B. Actually       
B. prove          
B. speak          
B. laughing       
B. reply          
B. minded         
B. next           
B. thanks          
B. thanks to      
B. appeared       
B. leave           
B. hero            
B. managing       
B. took the place of
B. proud          
B. words          
B. advised         
C. worried     
C. team       
C. new        
C. Finally    
C. tell        
C. stand      
C. pointing  
C. talk      
C. considered  
C. last        
C. sorry      
C. except for
C. seemed     
C. miss        
C. friend      
C. wasting      
C. made fun of  
C. interested
C. stories    
C. warned                
D. eager            
D. city            
D. common          
D. Fortunately      
D. accept          
D. live            
D. smiling          
D. listen          
D. avoided          
D. first            
D. bye              
D. instead of      
D. stayed          
D. teach            
D. leader          
D. enjoying        
D. got away from    
D. busy            
D. experiences      
D. reminded        
题型:判断题

2SO2(g)+O2 (g)= 2SO3 (g),反应过程的能量变化如图所示。已知:1 mol SO2(g)氧化为1 mol SO3(g)的ΔH="-99" kJ/mol。

请回答下列问题:

(1)图中A、C分别表示                           ,E的大小对该反应的反应热有无影响?        。该反应通常用V2O5作催化剂,加V2O5会使图中B点升高还是降低?        ,理由是                                                             

(2)图中ΔH=             kJ/mol;

(3)如果反应速率v(SO2)为0.05 mol/(L·min),则v(O2)=                 mol/(L·min);

(4)已知单质硫的燃烧热为296 kJ/mol,计算由S(s)生成3 mol SO3(g)的ΔH(要求计算过程)。

题型:判断题

试述一氧化碳中毒的临床特点?

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