题目内容 (请给出正确答案)
提问人:网友d*******1 发布时间:2022年4月5日 20:10
[单项选择题]

下列哪种物质可防治癞皮病()

A.尼克酰胺

B.视黄醇

C.生物素

D.钴胺素

E.叶酸

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