题目内容 (请给出正确答案)
提问人:网友l******8 发布时间:2023年1月15日 16:39
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()是维持机体正常生理功能及细胞内特异代谢反应所必需的一类微量低分子有机化合物。

A . 碳水化合物

B . 无机盐

C . 维生素

D . 矿物质

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