摘要： 被成为“脑黄金 的DHA是一种高级脂肪酸.它的分子中含6个碳碳双键.学名为二十六碳六烯酸.它的分子组成应是··············································································( ) A. C25H51COOH B. C25H39COOH C. C26H43COOH D. C26H47COOH

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