问题 单项选择题 按每摄入1000Kcal能量,成年人硫胺素、核黄素、尼克酸的供给量分别为______。A.0.5mg,0.5mg,5mgB.1.2mg,1.2mg,12mgC.1mg,1mg,10mgD.5mg,5mg,5mg 答案 参考答案:A