水在下述哪种色谱法中洗脱能力最弱（作为底剂）：（）

>> 高等继续教育 / 现代色谱分析

高等继续教育 / 现代色谱分析

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题型描述: 单选题
水在下述哪种色谱法中洗脱能力最弱（作为底剂）：（）
A.正相色谱法
B.空间排斥色谱法
C.吸附色谱法
D.反相色谱法

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现代色谱分析

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3[写作题] Directions: The following passage is incomplete with one body paragraph missing．Study the passage carefully and write the missing paragraph in about 100 words．Make sure that your tone and diction are in unity with the passage provided． The Breakdown of Communication It is commonly acknowledged that language problems make communication between people from different cultures difficult．Because of the language barriers，people cannot express their feelings clearly to each other．However, communication problems also exist between individuals from the same culture．Although they have the same cultural background，they sometimes cannot understand each other well．Communication between individuals breaks down because of many factors．The most significant ones include personality, age difference and competition between individuals． Personality has a great influence on communication between people．First, the sharing of common interests is often essential for initiating communication． If two people hold completely different attitudes，it will not be easy for them to start communicating with each other．Second，the willingness to express their feelings and opinions freely is needed if meaningful communication is to be developed．Some people do not want to talk about controversial subjects, fearing that this will hurt their relationship with friends. Instead, they keep their discussion of topics at a very superficial level，which prevents them from knowing and understanding each other. The lack of understanding leads to unsuccessful communication. It is clear that personality, to some extent，affects the initiation and maintenance of communication. Although age difference gives rise to communication problems between two generations，competition poses an even greater problem when people are about the same age．Intense competition in the modern world creates tremendous pressure on people．In order to get ahead in a career or in school, people tend to devote most of their time to working，studying，or other activities that enhance their prospects for the future．As a consequence，they have little inclination to communicate with others. They are anxious about their achievements because those are the measures of success in life. So, keen competition also discourages people from having a good understanding of each other. Communicating with other people involves much effort because people’s personality, the generation gap and keen competition bring about potential problems. These problems are constantly with us, and any of them may lead to a breakdown in communication between individuals. The following passage is incomplete with one body paragraph missing．Study the passage carefully and write the missing paragraph in about 100 words．Make sure that your tone and diction are in unity with the passage provided．河南理工大学

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