当传统的3P词汇教学模式受到抨击后,新的词汇教学理念纷纷涌现,但高职学生并未因此而从如何记忆词汇的困惑中解放出来。笔者在多年的词汇教学中,通过研究学生课堂学习和自主学习词汇的过程和结果,总结出了一些适合高职学生的词汇教学方法。%With the chlor-alkali enterprises chlorine drying process improvements,equipment and related downstream products of chlorine water demands increase,most chlor-alkali plant chlorine water content can reach 400 mg / L or less,some plants can reach 50 mg / L or less.Anhydrous magnesium perchlorate is not absorbent desiccant and chlorine reaction,the gas through magnesium perchlorate remaining humidity as low as 0.0002mg / L,after absorbing a magnesium perchlorate trihydrate,can be used for chlorine Determination of trace water.
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