问题 问答题 论述题

如何提高燃烧温度?

答案

参考答案:(1)提高燃料的发热量,燃料的发热量越高,则燃烧温度越高

(2)采用合理的燃烧,实现燃料的完全燃烧

(3)降低炉体热损失

(4)降低空气消耗系数

阅读理解

阅读理解。

     The Wilsons decided to go overseas for vacation. They had a family

meeting to plan the vacation. "First," Mr. Wilson said, "we should decide

where we are going."

     "I don't agree," Mrs. Wilson said, "I think we should decide when we are

going first. We don't want to go to places when they are cold."

     Mr. Wilson agreed, so the family's first decision was when to go on

vacation. They decided to go in July. "Now we can decide where to go," said Mr. Wilson. "But, Dad," Ben said, "don't you think that where we go depends on(依赖,取决于)how we go? If we plan to fly, we can go a long way. If we

plan to drive, we can't go far."

     Again, Mr. Wilson agreed, and they discussed this. At last they agreed to

travel by plane. And so the planning meeting went on. The next day, one of

Mr. Wilson's friends at work asked, "Where are you going for vacation?"

     "Well," Mr. Wilson told him, "we are going in summer by plane, but I

don't know where we are going!

1. Why did they have a family meeting?

A. Because they wanted to save money.      

B. Because they had a party.

C. Because they wanted to plan the vacation.  

D. Because they were in trouble.

2. First they decided ______________.  

A. where to go      

B. when to go      

C. how to go      

D. what to do

3. They decided to go in ______________.   

A. June          

B. August          

C. July          

D. May        

4. They decided to travel by_____________.

A. plane          

B. bus            

C. car          

D. train

5. They didn't decide _____________.

A. where to go    

B. when to go      

C. how to go    

D. all of above

解答题