名词解释题腐殖酸 humic acids
名词解释题
腐殖酸 humic acids
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相关考题：
Chemical burns are caused by the skin coming in contact with ______.A.acids or alkaliesB.diesel oilC.acids, but not alkaliesD.alkalies, but not acids
单选题Which of the following is NOT true?ATrans fatty acids increase the risk of heart disease.BTrans fatty acids increase levels of “good” cholesterol.CTrans fatty acids can be found in cookies, crackers and dairy products.DTrans fatty acids can be found in meats and fast food.
填空题腐殖质中不能被酸和碱提取的部分称为（），可溶于稀碱但不溶于酸的部分称为腐殖酸，既溶于碱又溶于酸的的部分称为富黑酸