小儿发生佝偻病的主要原因是A.摄入不足B.日光照射不足C.疾病因素D.生长因素E.药物因素

作者: rantiku 人气: - 评论: 0
问题 小儿发生佝偻病的主要原因是
选项 A.摄入不足 B.日光照射不足 C.疾病因素 D.生长因素 E.药物因素
答案 B
解析

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