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【单选题】
采用间歇反应釜来生产乙酸乙酯,反应方程式如下:a+b→c+d。a,b,c,d分别代表了乙醇,乙酸,乙酸乙酯和水,反应等温等,其为可逆反应。反应速率方程为:-r=k(Ca*Cb-Cc*Cd/Kc)。其中k为2.2*10^-6m3/(kmol.s),Kc为2.93。反应初始溶液的组成为,乙醇3.91 kmol/m3;乙酸10.2 kmol/m3;乙酸乙酯为0;水17.56 kmol/m3,乙酸乙酯分子量为88。若乙醇的转化率为0.35,反应器的日生产能力为50000kg/天,非生产操作时间为10小时。那么反应器的有效体积应当为多少立方米?
A.
192.5725
B.
348.2672
C.
209.8719
D.
227.1713
E.
330.9678
F.
313.6683
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【单选题】在1200℃时，天然气脱硫工艺中会发生下列反应 ①H 2 S(g)+ O 2 (g)=SO 2 (g)+H 2 O(g)         △H 1 ②2H 2 S(g)+SO 2 (g)= S 2 (g)+2H 2 O(g)      △H 2 ③H 2 S(g)+ O 2 (g)=S(g)+H 2 O(g)             △H 3 ④2S(g) =S 2 (g)            ...
A.
△H 4 =2/3（△H 1 +△H 2 -3△H 3 ）
B.
△H 4 =2/3（3△H 3 -△H 1 -△H 2 ）
C.
△H 4 =3/2（△H 1 +△H 2 -3△H 3 ）
D.
△H 4 =3/2（△H 1 -△H 2 -3△H 3 ）
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【单选题】How to Find Your Affiliate Niche Market Profiting from your affiliate niches. Finding your own profitable niche online is where most aspiring affiliates get stuck, and it can often take months on end ...
A.
Those are the basic rules, finding lucrative niches, however, requires more strategies and techniques that you can find by visiting the number one place to learn about affiliate niche marketing.
B.
is very possible if you truly understand the enormous potential that exists with knowing the correct niches to get into.
C.
Skin this broad category till you get to a segment of what you started with.
D.
Finding your own niche though is not entirely impossible, there are guidelines for finding niches and if followed correctly will get you results.
E.
The easy way to do this is using quotes when entering the keyword into Google.
F.
If you understand this then you are moments away from your ideal customers.
G.
those who are breaking up, those who are not comfortable with the other partner or those that want to make the relationship better.
H.
Niche marketing is an extremely powerful concept that has the potential to change affiliate income levels. (9)
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【单选题】以下最容易采取整车运输的是()
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少品种大批量配送
B.
定时配送
C.
共同配送
D.
分散配送
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【单选题】以下最容易采取整车运输的是( )
A.
共同配送
B.
定时配送
C.
分散配送
D.
少品种大批量配送
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【多选题】论文的表述的要求是什么（）
A.
一般以详写和略写的区别来突出重点
B.
总体结构要求比例合理，具有形式美
C.
各段落之间的层次关系要一目了然
D.
检验的标准是逻辑性
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【单选题】Doosan Infracore's success in China's market can be attributed to the following marketing strategies except_______________________.
A.
the localization strategy
B.
a wide variety of distribution channels
C.
niche demand creation
D.
technological innovaiton
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【单选题】Ron and Gail, owners of Fun-Spot, strive to provide new offerings and entertainment options for their visitors. This type of strategy can be best described as ________.
A.
market penetration
B.
market development
C.
product development
D.
niche marketing
E.
diversification
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【单选题】Doosan Infracore's success in China's market can be attributed to the following marketing strategies except_________________.
A.
the localization strategy
B.
a wide variety of distribution channels
C.
niche demand creation
D.
technological innovation
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【多选题】论文的表述的要求是（）
A.
一般以详写和略写的区别来突出重点
B.
总体结构要求比例合理，具有形式美
C.
各段落之间的层次关系要一目了然
D.
检验的标准是逻辑性
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【简答题】论文的表述的要求是()。 A一般以详写和略写的区别来突出重点 B总体结构要求比例合理，具有形式美 C各段落之间的层次关系要一目了然 D检验的标准是逻辑性
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相关题目：
【单选题】在1200℃时，天然气脱硫工艺中会发生下列反应 ①H 2 S(g)+ O 2 (g)=SO 2 (g)+H 2 O(g)         △H 1 ②2H 2 S(g)+SO 2 (g)= S 2 (g)+2H 2 O(g)      △H 2 ③H 2 S(g)+ O 2 (g)=S(g)+H 2 O(g)             △H 3 ④2S(g) =S 2 (g)            ...
A.
△H 4 =2/3（△H 1 +△H 2 -3△H 3 ）
B.
△H 4 =2/3（3△H 3 -△H 1 -△H 2 ）
C.
△H 4 =3/2（△H 1 +△H 2 -3△H 3 ）
D.
△H 4 =3/2（△H 1 -△H 2 -3△H 3 ）
查看完整题目与答案
【单选题】How to Find Your Affiliate Niche Market Profiting from your affiliate niches. Finding your own profitable niche online is where most aspiring affiliates get stuck, and it can often take months on end ...
A.
Those are the basic rules, finding lucrative niches, however, requires more strategies and techniques that you can find by visiting the number one place to learn about affiliate niche marketing.
B.
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C.
Skin this broad category till you get to a segment of what you started with.
D.
Finding your own niche though is not entirely impossible, there are guidelines for finding niches and if followed correctly will get you results.
E.
The easy way to do this is using quotes when entering the keyword into Google.
F.
If you understand this then you are moments away from your ideal customers.
G.
those who are breaking up, those who are not comfortable with the other partner or those that want to make the relationship better.
H.
Niche marketing is an extremely powerful concept that has the potential to change affiliate income levels. (9)
查看完整题目与答案
【单选题】以下最容易采取整车运输的是()
A.
少品种大批量配送
B.
定时配送
C.
共同配送
D.
分散配送
查看完整题目与答案
【单选题】以下最容易采取整车运输的是( )
A.
共同配送
B.
定时配送
C.
分散配送
D.
少品种大批量配送
查看完整题目与答案
【多选题】论文的表述的要求是什么（）
A.
一般以详写和略写的区别来突出重点
B.
总体结构要求比例合理，具有形式美
C.
各段落之间的层次关系要一目了然
D.
检验的标准是逻辑性
查看完整题目与答案
【单选题】Doosan Infracore's success in China's market can be attributed to the following marketing strategies except_______________________.
A.
the localization strategy
B.
a wide variety of distribution channels
C.
niche demand creation
D.
technological innovaiton
查看完整题目与答案
【单选题】Ron and Gail, owners of Fun-Spot, strive to provide new offerings and entertainment options for their visitors. This type of strategy can be best described as ________.
A.
market penetration
B.
market development
C.
product development
D.
niche marketing
E.
diversification
查看完整题目与答案
【单选题】Doosan Infracore's success in China's market can be attributed to the following marketing strategies except_________________.
A.
the localization strategy
B.
a wide variety of distribution channels
C.
niche demand creation
D.
technological innovation
查看完整题目与答案
【多选题】论文的表述的要求是（）
A.
一般以详写和略写的区别来突出重点
B.
总体结构要求比例合理，具有形式美
C.
各段落之间的层次关系要一目了然
D.
检验的标准是逻辑性
查看完整题目与答案
【简答题】论文的表述的要求是()。 A一般以详写和略写的区别来突出重点 B总体结构要求比例合理，具有形式美 C各段落之间的层次关系要一目了然 D检验的标准是逻辑性
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