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搜题
【单选题】
依据蛋白质元素组成的特点测定蛋白质含量的方法是
A.
凯式定氮法
B.
紫外吸收法
C.
茚三酮反应
D.
双缩脲法
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A.
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D.
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A.
supposed that
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D.
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A.
kiss
B.
bow
C.
say hello
D.
shake hands
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