以DC一B型双管采油树为例叙述安装步骤怎样进行?

题型:问答题 简答题

问题:

以DC一B型双管采油树为例叙述安装步骤怎样进行?

考点:石油钻井工考试石油钻井工技师石油钻井工技师题库
题型:问答题 简答题

如图所示,一平行板电容器充电后与电源断开,这时电容器的带电量为Q,P是电容器内一点,电容器的上板与大地相连,下列说法正确的是

A.若将电容器的上板左移一点,则两板间场强减小

B.若将电容器的下板上移一点,则P点的电势升高

C.若将电容器的下板上移一点,则两板间电势差增大

D.若将电容器的下板上移一点,则两板间电势差减小

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     When I was in seventh grade, I volunteered at a local hospital during the summer. I spent most of the
time there with Mr Gillespie. I spent many days there__1__ his hand and talking to him. He became a
close __2__ of mine, although he was in a coma(昏迷).
     I left for a week, and when I came back, Mr Gillespie was__3__. I didn't have the courage to ask
any of the nurses where he was, for fear they might tell me he had died. So with many questions__4__,  I
continued to volunteer there.
     Several years later, I was at a gas station when I noticed a __5__face. When I realized who it was,
my eyes filled with tears. He was alive! I got the __6__to ask him if his name was Mr Gillespie, and if he
had been in a coma about five years ago. With an uncertain look on his face, he __7__yes. I explained
how I knew him. His eyes welled up with tears, and he gave me the __8__ hug.
     He began to tell me how, as he lay there comatose(昏迷的), he could hear me talking to him and
could __9__me holding his hand the whole time. He thought it was a(n) __10__, not a person, who was
there with him. Mr Gillespie firmly believed that it was my__11__and touch that had kept him alive. We
both cried for a while, said our good byes and__12__our separate ways.
     I know that I made a __13__between his life and his death. More __14__,  he has made a very big
difference in my life, too. I will never forget him and what he __15__for me: he made me an angel.
( )1. A. touching    
( )2. A. friend      
( )3. A. dead        
( )4. A. undone      
( )5. A. unbelievable
( )6. A. issue        
( )7. A. allowed      
( )8. A. coldest      
( )9. A. feel        
( )10. A. animal      
( )11. A. noise      
( )12. A. ran        
( )13. A. life        
( )14. A. importantly
( )15. A. missed      
B. breaking    
B. nurse        
B. lost        
B. unanswered  
B. pleasant    
B. effect      
B. replied      
B. best        
B. appreciate  
B. angel        
B. shout        
B. checked      
B. difference  
B. carefully    
B. realized    
C. holding      
C. volunteer    
C. puzzled      
C. uncovered    
C. familiar    
C. bet          
C. thought      
C. warmest      
C. imagine      
C. businessman  
C. voice        
C. turned      
C. promise      
C. frequently  
C. did          
D. seeking        
D. doctor        
D. gone          
D. unaccepted    
D. strange        
D. courage        
D. considered    
D. worst          
D. send          
D. ambassador    
D. suggestion    
D. went          
D. lives          
D. regularly      
D. practiced      
题型:问答题 简答题

下列因素中,不影响照片影像对比度的是

A.管电压
B.被照体的原子序数
C.被照体的密度
D.被照体的形状
E.被照体的厚度

题型:问答题 简答题

If you've ever seen a James Bond movie,you'll know that the hero gets around in a smart Aston Martin car. Even if you know full well that you could never afford such an expensive vehicle, you don't forget the name, or the car.

  Why? You have been affected by product placement.

  Companies pay a film to place their products in the movie. Product placement took off in the West in the 1980s and is now catching on in China. Two Hunan Satellite TV dramas are recent examples:Ugly Wudi and Let's Go Watch the Meteor Shower (《一起去看流星雨》).

  Shampoo, mobile phones, cars and fitness centers–anything can be product-placed. Advertisers value the mass appeal of the movies, knowing that a successful film can showcase their goods to hundreds of thousands of viewers. But when product placement takes over, artistic considerations can take a back seat.

  Cai Zhiyong has been product-placing for years. The Beijing-based advertiser admits there is a conflict between art and business. He explains the way one ad works. In If You are the One (《非诚勿扰》), the actress Shu Qi plays a flight attendant. The movie contains product placement for airline companies.

  Cash-strapped filmmakers often have to give less consideration to the quality of their work because they need money from advertisers. In the original story for Meteor Shower, the heroine's mother owned an ice cream shop. But no ice cream company wanted to sponsor (赞助) the film. For this reason, the story was changed. In the film the man drinks 20 cups of milk tea instead of eating ice cream.

  So you may see the power of business over the movies, since the script (剧本) was perhaps written so that a product could be placed-whether it was ice cream or milk tea.

小题1:James Bond movies are mentioned in the first paragraph to show_________.

A.how popular James Bond is

B.how great the Aston Martin car is

C.how to make a movie more artistic

D.how effectively product placement works小题2:Product placement can have a bad effect on the_________ of a movie.

A.atmosphere

B.mass appeal

C.box-office success

D.artistic value小题3:What does the underlined word "cash-strapped" in Paragraph 6 probably mean?

A.Short of money.

B.Wasting a lot of money.

C.having enough money.

D.Trying to save money.小题4:We can learn from the example of Meteor Shower that__________.

A.business has a big say in the movie

B.the original story was not suitable for a movie

C.filmmakers are only concerned about making money

D.milk tea is more popular than ice cream

题型:问答题 简答题

条料弯曲后,有一层材料长度不变,称中性层,而内层受压则()。

A、不变

B、缩短

C、伸长

D、变宽

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