Introduction This manual is one of a series dealing with materials and manufacturing procedures for biscuits It describes, in general terms the most important ingredients used to make biscuits by type, function, handling and storage. Most of the ingredients are used to make biscuit dough. The techniques for
掌握水体、饮用水、安全饮用水的概念;了 解水的卫生学意义,掌握饮用水的基本卫生要求; 了解饮用水的调查与评价;掌握安全饮用水的保 证措施;掌握废水与生活污水处理的主要原则和 基本方法。 第一部分 关于水的基本概念 Section1 Coception about water 第二部分 水质调查与评价 Section2 Water quality investigation and evaluation 第三部分 保证饮水安全的措施 Section3 Measures for keeping the drinking water safe