试题与答案

发绀的原因是()A.血液中还原血红蛋白增多 B.血红细胞大量破坏 C.局部瘀血 D.

题型:单项选择题

题目:

发绀的原因是()

A.血液中还原血红蛋白增多

B.血红细胞大量破坏

C.局部瘀血

D.毛细血管通透性增加

E.以上都是

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对

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