【单选题】【消耗次数:1】
后乳中维生素D及25-羟维生素D水平是初乳中的
1.5-3.0倍
1.0-2.0倍
1.5-2.5倍
2.0-3.0倍
1.5-2.0倍
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相关题目
【单选题】 血清测定25-羟基维生素D水平多少充足()
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②  20.0-30.0ng/ml
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