浮沉试验报告表中的带泥小计考虑的是浮沉煤泥是所有原生煤泥。

相对性红细胞增多症是( )

A．血容量减少
B．白细胞减少
C．血小板减少
D．动脉血氧饱和度减低
E．红细胞生成素减低

阅读理解

     Have you ever heard of blogs (博客)? If you haven't, you should have. It's here, it's growing and it's

having an influence on our life. Surf the Internet and you'll find blogs everywhere. A blog, shortened from "weblog", is a public Internet journal written by one person or a group of people. It is a website in which

a person or a group can place news, personal thoughts, text, photos, video or audio files, or links upon

which visitors can comment. A blog lets you post on the Internet without having to know web design or

be technical. You are given an environment to make dated entries on the topic of your choice which are

"published", so other people can read them.

     Authoring a blog, maintaining a blog or adding an article to an existing blog is called "blogging".

Blogging has revolutionized Internet publishing in the last several years because it gives everyone with

Internet access the opportunity to become an online writer. Objects, such as "text and photos" in a blog

can be called "blog posts", "posts", or "entries". The person who posts these entries is called a "blogger".

     Now, somewhere around the world, a blog is created almost every 6 seconds. Because it's great

potential, Bill Gates views it as important as e-mail, BBS, and MSN. He's trying to make blogs the

important tools for future business communications.

1. A blog is            .

A. a comment    

B. an Internet journal

C. a design

D. a link

2. A person can do the following things in a blog EXCEPT _______.

A. talk to others

B. give comments    

C. read articles

D. enjoy photos

3. Who is a blogger?

A. A person who posts letters.            

B. A person who writes articles.

C. A person who posts text or photos in a blog.  

D. A person who is an online publisher.

4. According to the passage, the reason why blogs are so popular is that they ____.

A. give everyone the chance to be an online writer

B. can be created by people without much knowledge of computer technology

C. enable a blogger to place news, personal thoughts, text and photos and give comments

D. all of the above

临界流时（）。

A.

B.

C.

D.不确定

1151智能型变送器出现输入压力变化时输出不变现象的排除方法（）

A、检查压力是否正确；进行4－20mA输出调整；更换电子线路板

B、检查变送器的供电电压是否在允许范围内；检查测试设备；核对4mA和20mA点对应的压力是否正确；更换变送器的膜头；更换电子线路板

C、检查电源极性是否接反；将测试端短路，检查壳体内的二极管是否损坏；更换变送器外壳

D、检查变送器的供电电压是否在允许范围内；检查负载电阻（250欧姆）；更换电子线路板

大、中型冷水机组中的水冷式冷凝器多采用（）换热器结构。

A.壳管式

B.套管式

C.肋片管式

D.板式