简述蒸馏后滴定法测定混凝土外加剂中释放氨的原理。

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问题:

简述蒸馏后滴定法测定混凝土外加剂中释放氨的原理。

考点:环境监测上岗考试混凝土外加剂中氨混凝土外加剂中氨题库
题型:问答题 简答题

阅读理解。

      People have lots of different thoughts that they wish to express. For

many reasons, most people just keep their thoughts to themselves and never

tell them to others.Another form of self-expression is the written word.

For many people, it is easier for them to express their thoughts or

emotions in writing, instead of speaking them out. It is an especially

popular way for expression among shy and highly self-conscious

(自尊) people.People's thoughts are written down and then

published(出版) so that others can read and enjoy them. There are

many reasons why newspapers and publishers actually publish

people's thoughts, but the major reason is to give information.With

the introduction of newer technologies, new ways now appear to

share people's ideas quickly. Blogs are just one way.People can

now let the world know their hopes, dreams and day to day activities

through a web blog. Better than that, many sites allow customers to

words web and log. Slogging is the term that is used to refer to

activities relating to a blog, such as creating it, updating and

adding content(内容). And the blogger is the person who puts that

content on the blog.Blogs can be very powerful. Blogs can change

the world by changing the opinions of large numbers of people

around the world

1. People who are shy would like to express their thoughts by _____.      

A. writing      

B. reading      

C. speaking      

D. thinking

2.According to the passage, the major reason that newspapers publish people's thoughts is to _____.     

A. make money             

B. make them well-known      

C. give information               

D. let people relax

3.he latest and quickest way for you to share your thought with others is _____.    

A. publishing it on the newspaper      

B. taking part in the everyday activities      

C. talking to everybody you meet about it       

D. writing blogs on the web

4. The sixth paragraph is probably to ____.     

A. tell us the web blog is very interesting      

B. tell us how to write a blog      

C. explain the meaning of some related words      

D. show us the importance of the blog

5. Which of the following is NOT true according to the passage?      

A. No sites can help you create your own web blog for free.      

B. Blogs can affect people around the world greatly.      

C. The blogger is the person who puts some content on the blog.      

D. A web blog can let the world know your wishes and dreams

题型:问答题 简答题

小题1:---- Do you k        about( 关于 ) that actor ? ---- Yes , he is from Hongkong .

小题2:These b        are from Class One , and those girls are from Class Two .

小题3:Her face is round and her hair is            ( 短的 ).

小题4:My               ( 最喜欢的 ) color is orange .

小题5:Tina`s arms and                ( 腿 ) are long .

题型:问答题 简答题

为评估某住宅楼的价格,估价人员在该住宅楼附近地区调查选取了A、B、C、D、E共五个类似住宅楼的交易实例,其有关资料如下表:

项目 实例A 实例B 实例C 实例D 实例E
成交价格/(元/m2) 5100 5800 5200 5300 5000
成交日期 2002.11.30 2003.6.30 2003.1.31 2001.7.31 2003.5.3l
交易情况 +2% +21% 0 0 -3%
区位状况 0 -3% +3% +1% 0
房地产状况 权益状况 -2% 0 +2% -1% -1%
交易实物 -4% -5% -2% +2% +1%
上表中,交易情况、房地产状况中的各正、负值都是按直接比较所得结果。其中,房地产状况中的三方面因素产生的作用程度相同。另据调查得知:从2001年7月1日至2002年1月1日该类住宅楼市场价格每月递增1.5%,其后至2002年11月1日则每月递减0.5%,而从2002年11月1日至2003年4月30日的市场价格基本不变,以后每月递增1%。试利用上述资料根据估价相关要求选取最合适的3个交易实例作为可比实例,并估算该住宅楼2003年8月31日的正常单价(如需计算平均值,请采用简单算术平均)。

题型:问答题 简答题

我国古代史学家非常重视典章制度的记录,《史记》有八书以记天文、地理、文物制度,其后许多断代史皆________“八书”体制,设“志”以记历代典章制度。

A. 沿袭

B. 沿革

C.抄袭

D.遵从

题型:问答题 简答题

烟囱根部吸力为290Pa,烟囱内废气流量为41.28m3/s,废气平均温度为220℃,大气最高温度为35℃,废气密度1.38kg/m3,大气密度为(1.28kg/m3,设烟囱上部出口内径D上为3.5m,根部内径D为6.85m。则烟囱高度为()m。
已知:λ=0.036,V0=1.77m/s,T=(220+273)K,T0=273K,V1=4.3m/S,K=1

A.97

B.98

C.99

D.100

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