题目内容

关于血红蛋白(Hb)与02结合特征的叙述,下列哪一项是正确的

A. Hb与02的结合是可逆的氧化作用
B. 血液[H+]升高时,Hb与02的亲和力增强
C. 氧离曲线右移,表示Hb与02的亲和力增强
D. CO与Hb的亲和力是02的210倍
E. Hb浓度低下时,氧合血红蛋白减少,血液呈紫蓝色

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