问题 问答题 简答题

当发生细粉分离器堵塞时有何现象?

答案

参考答案:

(1)细粉分离器人口负压减少,出口负压增大;

(2)排粉机电流上升,锅炉出力汽压、汽温异常上升;

(3)下粉管锁气器动作不正常;

(4)煤粉仓粉位提高不多,甚至下降。

阅读理解

Everyone needs friends. There is an old saying “Friends are God’s way of taking care of us.” But how do you find real friendship and keep it?

The American writer Sally Seamans tells young students some smart ways to find friends. Sally says finding friendship is just like planting a tree. You plant the seed and take care of it to make it grow.

First, you should choose a friend. What makes a Good friend? It is not because a person has money or good looks. A good friend should be kind and patient. For example, if you have a bad day, a good friend should listen to your complaints and do his or her best to help. To make a friend, you can not be too shy. You should make each other happy and share your lives. But things cannot always be happy. Even the best have fights. What should you do when you have a fight with your friend? You have to talk to him or her. When there is no one around, have an honest talk. If he or she doesn’t want to talk, you could write a letter.

There are three steps to being friends again:

Tell him or her how you are feeling ; say what your friend has done wrong, and explain why you did this or that. Remember that friendship is the most important thing in your life.

(   ) 1. Sally wants to tell students the ways to ________.

A. find friends    B. plant trees   C. get happy    D. keep fit           

(   ) 2. What makes good friends? A good friend should ________.

A. be lovely and cool                 B. be kind and patient

C. have lots of money                 D. have good looks

(   ) 3. What is the best title of the text?

A. Teenagers and friendship       B. The good friends around you

C. The trouble of growing up      D. The care and keeping of friends

单项选择题 A1/A2型题