问题 问答题 简答题

变压器油箱内有质量m为126t的变压器油(盛满油),需充氮运输,如果每瓶高纯氮气的体积V1是0.13m3,表压力p1为1500N/cm2,油箱内充氮压力p2保证在2N/cm2(表压),把油放净最少需要几瓶氮气(变压器油比重ρ为0.9g/cm3)?

答案

参考答案:

阅读理解
阅读理解。
人的喜好不同,发展方向也就不同。来看一看下列人物各自的喜好和志向吧。
I'm rally good at selling things. I also love helping people. But I'm not so good at solving
(解决) problems. I think I'd like to be a salesman or a detective (侦探).

I really like doing things with my hands. I also enjoy working with wood. I don't enjoy
working in the same place every day, and I hate being in noisy places. I think I'd like to be
a factory worker or a carpenter (木匠).

I'm good at explaining things and I really like children. I can't stand working long hours. I
think I'd like to be a doctor or a teacher.

I'm really interested in meeting people, and I enjoy wearing different clothes every day.
I'm not so good at organizing(安排) my time and computers. I am going to be a model or
an accountant(会计).

I enjoy helping people, but I can't stand working nights and weekends. I want to be a nurse or a social worker.

根据上述内容,选择正确的答案.。
1. Larry wants to be         
A. a worker or a teacher        
B. a nurse or a doctor  
C. a salesman or a detective    
D. a model or a carpenter  
2. Anita doesn't enjoy working in         
A. the same place      
B. different places  
C. noisy places        
D. A and C
3.          wants to be a teacher or a doctor. 
A. Anita    
B. Jill    
C. Maria    
D. Jim
4. Maria likes         
A. meeting people      
B. wearing different clothes
C. A and B            
D. working nights and weekends
5. What does "can't stand" mean in Chinese? 
A. 不能忍受  
B. 不能站立  
C. 不能坚持    
D. 不能适应
单项选择题