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问题 单项选择题

关于表面活性剂增溶叙述错误的是

A．极性药物，非离子表面活性剂的HLB值愈大，增溶效果愈好
B．药物(同系物)的相对分子质量愈大，被增溶的量通常愈小
C．加入电解质能够降低增溶剂的临界胶团浓度
D．溶液的pH增大，有利于弱酸性药物的增溶
E．同系物增溶剂的碳链愈长，增溶量也愈大

答案

参考答案：D

解析：掌握表面活性剂的增溶原理。

填空题
根据短文内容，用方框所给单词的适当形式填空，每词限用一次。
they   subject   from   know  how
Many people go to school for a good education(教育). They learn languages, history, math, art and other ___81_____. School education is very important and useful, yet no one can learn everything ___82_____ school. No matter(不管) how much a teacher ____83____, he can’t teach his students everything they want to know. His work is to show his students ____84____ to learn. He teaches ____85____ how to read and how to think. So, much more is to be learned outside school by the students themselves.
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单项选择题

采用( )方式，外贸企业进货人员对供货单位开给的提货单和销货发票审核无误后，即可办理货款结算手续。

A．提货制
B．送货制
C．发货制
D．订货制
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