According to the mean-variance criterion, which of the statements below is correct?（）

According to the passage, what does the word "bravado" (Paragraph 2, Line 5) probably mean？

A．obvious dishonesty

B．personal integrity

C．false bravery

D．good expectation

According to the passage, "to move as much of these goods as possible"(Line 3, Para.l} means________.

A.to redesign these goods for large-scale production

B.to transport goods as efficiently as possible

C.to sell the largest possible amount of goods

D.to dispose of these goods in large quantities

A、吸收剂—15～25％(wt)的一乙醇胺水溶液。溶液的浓度通常根据腐蚀性和操作经验来选择。Absorbent - 15-25% (wt) monoethanolamine solution. The concentration of solution is usually chosen according to corrosiveness and operating experience.

B、脱酸气情况：特点为化学吸收过程，受压力影响小，当压力在3～7kg/cm2仍能达到管输天然气要求。Deacidification gas: it is characterized by chemical absorption process and is less affected by pressure. When the pressure is 3 ~ 7kg/cm2, it can still meet the requirements of pipeline natural gas transportation.

C、缺点：蒸气压高，挥发性强，腐蚀性强。Disadvantages: high vapor pressure, strong volatility, strong corrosion.

D、应用：此法常用于脱硫，应用广泛。Application: this method is widely used in desulfurization.

A、吸收剂——环丁砜和二异丙醇胺水溶液。与MEA法工艺流程相似。Absorbents - sulfoxide and diisopropanolamine solution. Similar to MEA process.

B、兼有化学吸收和物理吸收两种性能的混合溶剂。胺采用二异丙醇胺，对酸性气为化学吸收；砜采用环丁砜，对酸性气为物理吸收。A mixed solvent with both chemical and physical absorption properties. The amine USES diisopropanolamine, which is chemically absorbed by acid gas. Sulfoxide adopts sulfoxide, which is physically absorbed by acidic gas.

C、当气体中酸性气分压低时，主要为化学吸收，随酸性气分压提高，物理吸收加强。根据酸性气分压的不同，配制胺、砜和水比例不同的吸收剂，相当于把醇胺溶液中的水换为砜。由于环丁砜对酸性气吸收能力很强（远高于水），故其吸收能力远较其它吸收方法强。When the acid gas fraction in the gas is reduced, it is mainly chemical absorption, with the increase of acid gas partial pressure, physical absorption is strengthened. According to the different acidic gas partial pressure, the preparation of amine, sulfone and water ratio of different absorbent, equivalent to the alcohol amine solution of water for sulfone. Because sulfoxide has a strong absorption ability to acid gas (much higher than water), its absorption ability is much stronger than other absorption methods.

D、以上都不对

阅读材料，回答题。

It is difficult to imagine what life would be like without memory. The meanings of thousarof everyday perceptions, the bases for the decisions we make, and the roots of our habits and skiare to be found in our past experiences, which are brought into the present by memory. Memory can be defined as the capacity to keep information available for later use. It inclucnot only "remembering" things like arithmetic or historical facts, but also involving any change the way an animal typically behaves. Memory is involved when a rat gives up eating grain becathe has sniffed something suspicious in the grain pile. Memory is also involved when a six-year-(child learns to swing a baseball bat. Memory exists not only in humans and animals but also in some physical objects and nchines. Computers, for example, contain devices for storing data for later use. It is interesting compare the memory-storage capacity of a computer with that of a human being. The instant-accmemory of a large computer may hold up to 100,000 "words"--ready for instant use. An aver U.S. teenager probably recognizes the meaning of about 100,000 words of English. However, is but a fraction of the total amount of information which the teenager has stored. Consider, for ample, the number of faces and places that the teenager can recognize on sight. The use of words is the basis of the advanced problem-solving intelligence of human bein

A large part of a person&39; s memory is in terms of words and combinations of words.

According to the passage， memory is considered to be__________ 查看材料

A.the basis for decision making and problem solving

B.an ability to store experiences for future use

C.an intelligence typically possessed by human beings

D.the data mainly consisting of words and combinations of words

A.MEA老化

B.MEA溶液变脏

C.天然气含轻烃太多

D.天然气含CO2高

A.MEA分析的目的

B.MEA分析的团队

C.MEA分析的时间

D.MEA分析的工具

A.MEA分析的目的

B.MEA分析的团队

C.MEA分析的时间

D.MEA分析的工具

A.MOCA

B.MORA

C.MEA