题目内容
关于呼吸衰竭的临床表现，下列哪些正确
2022-02-24
A.有呼吸困难表现，不一定有呼吸衰竭
B.发绀通常反映缺氧
C.缺氧不一定表现发绀
D.有发绀不一定有呼吸衰竭
E.有呼吸衰竭一定有发甜
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