题目【单选题】粪便隐血试验阳性常提示上消化道出血量已达到A. 1mlB. 2mlC. 5mlD. 50mlE. 100ml【单选题】粪便隐血试验阳性常提示上消化道出血量已达到A. 1mlB. 2mlC. 5mlD. 50mlE. 100ml题目解答答案C. 5ml