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为了解徐州市小学校门前食品摊点的卫生状况 ,以便加强管理 ,保护学生身体健康 ,1998年 6月对徐州市 4 0所小学校门前的食品摊点进行了卫生学调查。1 对象与方法1 1 分别对徐州市区、市郊各 2 0所小学校门前食品摊点进行一般卫生情况调查。随机抽取市区、市郊各10所小学校的?
In order to understand the health status of food stalls in front of Xuzhou primary school in order to strengthen management and protect the health of students, a hygiene survey was conducted on the food stalls in front of 40 primary schools in Xuzhou in June 1998. OBJECTIVES AND METHODS 1 1 Conduct a general health survey of food stalls in front of 20 primary schools in Xuzhou’s urban and suburban areas respectively. Random selection of urban and suburban 10 primary schools?