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当前学科:兽医内科学
题目:
单选
下列几种情况中,与佝偻病的病因关系最密切的是()。
A . 维生素B1缺乏
B . 维生素B2缺乏
C . 维生素D缺乏
D . 维生素E缺乏
E . 维生素A缺乏
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