问题 问答题 简答题

试述环式碎煤机大修后的质量标准?

答案

参考答案:

(1)各部分螺栓、螺母必须牢固,不应有松动现象。

(2)机体和机盖结合面处密封垫应垫好,不应有漏粉现象。

(3)转子主轴水平允许误差不大于0.3%。

(4)挠性联轴器护罩要紧固牢靠。

(5)开车后机体应无明显振动,振动值不可超过规定标准。

(6)运转4小时时轴承温度不得超过80。

(7)运转中机体内应无金属碰撞声音。

(8)待本机达到运行速度后,调节筛板与环锤间隙,以保证排料粒度不大于25毫米。

(9)带负荷试车时,严禁带负荷启动,一定要达到额定转速后才能进料。

阅读理解

根据短文内容,判断下列陈述内容的正误,正确的写“T”, 错误的写“F”。

     Everyone has his own birthday. People celebrate their birthdays in different countries in different

ways. Now here are four people from different countries. They will tell us how they celebrate their

birthdays in the countries.

     Sandy Morison comes from Madrid (马德里). He says happily, "My twenty-first birthday is on

Saturday, and I'm going to go out with some friends. To wish me a happy birthday, they're going to

pull on my ear 21 times, once for each year. It's an old custom. Some people pull on the ear just once,

but my friends are very traditional (传统)."

      Mr. and Mrs. Sato are from Tokyo. Mr. Sato is going to be 60 tomorrow. In Japan, the sixtieth

birthday is called Kanreki-it's the beginning of a new life. The colour red is for a sixtieth birthday. Mrs.

Sato says, "What am I going to give my husband? I can't say. It's a surprise!"

      Li Xiaomei from Beijing feels very excited and tells us, "Tomorrow is my sixteenth birthday. It's a

special birthday, so we're going to have a family party. I'm probably going to get some money in lucky

envelopes (信封) from my relatives. My mother is going to cook noodles- noodles are for a long life."

     Phillip Evans, from Paris, smiles to us, "I'm going to be 30 next week, so I'm going to invite three

very good friends out to dinner. In France, when you have a birthday, you often invite people out. In

some countries, I know it's the opposite-people take you out. "

    How do you usually celebrate your birthday?

( )1. People in different countries celebrate their birthdays in the same way.

( )2. To celebrate her birthday, Sandy is going to pull on her friends' ears.

( )3. On his birthday, Mr Sato is going to receive something red.            

( )4. Li Xiaomei is going to cook some noodles on her birthday.              

( )5. Phillip is going to take his friends out to dinner on his birthday.     

( )6. Mr. Sato is from Japan and Phillip is from France.

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