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为了解中专学生维生素B2营养状况，以便有的放矢地进行膳食指导，我们于1998年6月对广西柳州卫生学校学生做了抽样调查，现将结果报道如下。1对象与方法1．1对象：用随机抽样方法确定柳州卫校在校就餐的156名学生为调查对象。1．2方法：采用4h尿负荷试验[1]，受试者早晨排空膀
In order to understand the nutritional status of secondary school students vitamin B2 in order to carry out dietary guidance, we conducted a sample survey of Guangxi Liuzhou Health School students in June 1998, the results are reported below. 1 Subjects and Methods 1.1 Object: Using random sampling method to determine the Liuzhou Wei school 156 students in the school for the survey. 1.2 Methods: 4h urine load test [1], subjects empty the bladder in the morning