Some volatilizable substances such as methanol in steam can come into product directly , and influence product greatly if the factory adopts traditional heating method in alcohol production . there fore , improving steam quality is very important to alcohol production 摘要当甜菜糖蜜酒精生产企业采用传统的直接加热方式生产酒精时，蒸汽中的甲醇等易挥发组分直接进入产品，对酒精质量影响很大，因此改善蒸汽品质对酒精质量是至关重要的。
2.
In the first part , it gives the definition of creative thinking , and clarifies the relationship of two important modes of creative thinking , that is the collective thinking and the volatilizable thinking . in the second part , it reviews the general research achievement of the creative thinking teaching at home and abroad , it also introduces some modes of creative thinking teaching at home and abroad and the effect and evaluation of teaching experiments , and points out some existent problems 第一部分对创造性思维的概念进行界说，分析了创造性思维中的两种主要思维模式即聚敛思维与发散思维的关系；第二部分对国内外创造性思维教学的研究成果进行了概述，分别介绍了国内外创造性思维教学的四种模式、教学实验的效果与评估及其存在的问题；第三、四部分是论文的重点。
