问题 问答题 简答题

集团公司对采煤工作面泵站系统、压力、乳化液配比有何规定?

答案

参考答案:乳化液泵站和液化压系统完好,不漏液,泵压≥18Mpa,乳化液浓度不低于2~3%(炮采);泵压≥30Mpa,乳化液浓度不低于3~5%(综采),有现场配比和检查手段。

阅读理解

阅读理解。

     Harry is from London. He is now in China with his parents. He is thirteen years old. He is a student of

 Grade Seven.

    Harry is a clever student. He works very hard. He is good at all his lessons. He says he likes Chinese

 best. He speaks some Chinese now. All his teachers like him. They say he is a good student.

    Harry gets up at six twenty on weekdays. He has his breakfast at home. After breakfast. he walks to

  school. His school is about half a kilometer (公里) from his home. School begins at seven fifty every day.

  In the morning. they have four classes.

     Harry has lunch in the dining hall with his classmates. He usually has a short rest (休息) after lunch.

 They have three classes in the afternoon. And school is over at four forty.

   After school,Harry plays ball games in the playground. He goes home at about five thirty. He has a big

  supper every day. In the evening. he does his homework and watches TV. And then he goes to bed at

 nine thirty.

    Harry says he likes living in China very much. "The people here are friendly and the food is nice. I like

  all the things here. "He says to his parents.

1. Harry is a boy from _____.

    A. the USA        

    B. China          

    C. England          

    D. Japan

2. Which subject does Harry like best?

    A. English        

    B. Chinese        

    C. math            

    D. ball games

3. What time does Harry get up in the morning?

    A. At six ten      

    B. At seven fifty    

    C. At six            

    D. At six twenty

4. Where does he usually have lunch?

    A. At home        

    B. At school      

    C. At a restaurant    

    D. We don't know

5. What does he like in China?

    A. The people      

    B. The food        

    C. All the things      

    D. We don't know

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