问题 问答题 简答题

风枪三连件的组成以及油雾器的作用?

答案

参考答案:

风枪三连件组成:空滤器、油雾器、调压阀。

油雾器作用:管道压缩空气和润滑油合成油雾状,使工作的风枪摩擦副达到润滑,延长风枪的使用寿命。

阅读理解

阅读理解

     In Singapore, many middle school students spend a lot of their time on their studies. Good education

is often regarded as a ticket to success in their future. So many of these students try their best to get a

good mark in their examinations. They have a lot of homework every day and exams are a big headache.

Sometimes some of them are even made to go to remedial(补习的)classes after school.

     Schools run programmes outside school hours. The students can take part in sports and games, music

and dance, hiking and rock-climbing, etc. They are also very active in community service(社区服务).

     In their spare time, most students like to listen to pop music. Hollywood blockbusters(大片). Hong

Kong and Singapore movies are very popular among them. They understand IT very well. Some of them

also spend their free time surfing the Internet, e-mailing their friends, playing computer and video games.

     They sometimes go to cafes, fast-food restaurants, shopping centers and big bookstores.

     So, it looks like life as a middle school student in Singapore is not easy but it is rich and colorful.

1. What is NOT mentioned in the passage?  

A. Schoolwork.    

B. After-class activities.    

C. Subjects        

D. Things to do in the spare time.

2. Why do students work hard at school in Singapore?        

A. Because they have a lot of homework.

B. Because they have to go to remedial classes.

C. Because they want to get a good future.

D. Because they have many outside school activities.

3. What does the underlined sentences mean in the first paragraph?       

A. Students are afraid of exams.   

B. Students have a headache before an exam.

C. Students have too many exams.

D. Students are in poor health because of exams.

4. Programmes outside school hours are ______.        

A. the same as spare time activities      

B. remedial classes after school

C. sports actives        

D. popular among students

5. What do you know from the last sentences?

A. The middle school students live an easy life in Singapore.

B. The middle school students' life in Singapore is amazing.

C. The middle school students' life in Singapore is boring.

D. The middle school students' life in Singapore is hard, but interesting

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