问题
填空题
气固色谱分析中,当载气携带混合物不断流过色谱柱时,()的组分移动较快,最先流出色谱性。
答案
参考答案:吸附能力较弱
气固色谱分析中,当载气携带混合物不断流过色谱柱时,()的组分移动较快,最先流出色谱性。
参考答案:吸附能力较弱
完形填空 | |||
Many students find the experience of attending university lectures to be a confusing and frustrating experience. The lecturer speaks for one or two hours, perhaps __1__the talk with slides, writing up important information on the blackboard, __2__reading material and giving out __3__The new student sees the other students continuously writing on notebooks and __4__what to write. Very often the student leaves the lecture__5__notes which do not catch the main points and __6__ become hard even for the __7__to understand. Most institutions provide courses which __8__ new students to develop the skills they need to be __9__listeners and note-takers. __10__these are unavailable, there are many useful study-skills guides which __11_ learners to practise these skills __12__.In all cases it is important to __13_the problem __14__actually starting your studies. It is important to __15__that most students have difficulty in acquiring the language skills __16__in college study. One way of __17__these difficulties is to attend the language and study-skills classes which most institutions provide throughout the __18__year. Another basic __19__is to find a study partner __20_ it is possible to identify difficulties, exchange ideas and provide support. | |||
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