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【多选题】
下列关于临界胶束浓度说法正确的A.
是表面活性剂分子形成的胶束的最低浓度
B.
是表面活性剂分子形成的胶束的最高浓度
C.
是表面活性分子缔合形成胶束的最低浓度
D.
临界胶束浓度又称CMC，Critical Micell Concentration
E.
临界胶束浓度指的是形成的胶束的浓度
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举一反三
【简答题】行业是指从事国民经济中同性质的生产或其他经济社会活动的( )等构成的组织结构体系。
【单选题】Why do companies adopt just-in-time inventory system?
A.
They try to keep their inventory of spare parts as low as possible.
B.
The can save lots of money.
C.
It's a more efficient method of operating.
D.
A, B and C
【判断题】The differentiation strategy describes how companies get ahead by lowering their operating costs beneath those of others in the same business. This means they try to find ways to reduce costs in their...
A.
正确
B.
错误
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