对锅炉给水溶解氧含量的限制主要是为了保护省煤器。

题型:判断题

问题:

对锅炉给水溶解氧含量的限制主要是为了保护省煤器。

考点:炼焦工艺与设备干熄焦工艺干熄焦工艺题库
题型:判断题

阅读理解。

     When you are learning a language, listening, speaking and writing are important,   but reading can  also

be very helpful. When you read,  you can not only learn some new words, but also learn how to use them. When you read a passage, it gives you a good example for writing. Here are some good reading tips.

     Firstly, try to read at the right level (水平). Read something that you can understand.  If it is too  hard

for you, it is not interesting.

     Secondly, try to understand the new words.  If there are four or five new words on a page,  don't  use

a dictionary.  Instead, try to guess their meanings as you read.   Mark (作标记) them with a pencil. Then

look them up in a dictionary when you finish reading,   and write them in your own vocabulary book.  Try

to remember them.

     Thirdly, try to read for a short time once a day. Fifteen minutes or half an hour every day is better than

two hours every Sunday.   For example,   you can read before you go to bed,   or after you get up  or  at

lunchtime.

     Lastly, read something that interests you. Choose a newspaper, a book or a magazine about a subject

that you like. It will be easy enough for you to understand.

1. The underlined word "tips" in the passage means "_____  " in Chinese.

A. 末端        

B. 小费        

C. 处所      

D. 建议

2. How many reading tips does the writer give us?

A. Six.          

B. Five.        

C. Four.      

D. Three.

3. If you meet a few new words on a page while reading, you can _____  .

A. stop reading

B. guess the meanings at first

C. write them down at once

D. look them up right away

4. Which of the following is TRUE according to the passage?

A. Reading a lot can help you write better.

B. It is useful for you to read for long once a week.

C. When you read, you can only learn some new words.

D. Try to read something hard to make your English better.

5. Which is the BEST title for the passage? 

A. How to look up a new word    

B. How to make reading better    

C. How to remember new words

D. How to choose something to rea

题型:判断题

某同学设计右图所示的实验装置,进行一氧化碳还原氧化铜的实验。试回答:

(l)该装置存在的一个主要问题是               ,你的改进方法是                      

(2)实验过程中,图中A处能观察到的实验现象是                        

发生反应的化学方程式为                               。

B处观察到的实验现象是                             ;

反应的化学方程式是:                                        

题型:判断题

美国最早的证券交易所是()。

A.纽约证券交易所

B.芝加哥证券交易所

C.费城证券交易所

D.波士顿证券交易所

题型:判断题

目标管理这一概念最初是由德鲁克在《管理的实践》(1954)一书中作为一种新管理方法提出来的,其宗旨是用()代替()。

题型:判断题

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