The author puts forward the following opinions on several discussible problems of closed loop soft water cooling system for blast:furnace.

前言： 作者针对高炉软水密闭循环冷却系统存在的几个可讨论性问题提出了如下观点：冷却介质采用软水或纯水都是可靠的；

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But in the diversified ways of thinking and skills of creating, we can still see some characteristics in common, which makes the feminine art a discussible topic.

但在观念的多元与手法的多样中，我们仍能看到一些共有的品质，正是这些共有的品质，才使“女性艺术”构成了一个可以言说的话题。

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However, it is a really discussible question that there is infinitive in Mongolian language that belongs to very different language types and with quite different grammatical structure.

然而对于语言类型不同、语法结构迥异的蒙古语提出动词不定式是一个值得讨论的问题。

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