严重三凹征的主要原因是A.肺不张B.上呼吸道阻塞C.混合性呼吸道阻塞D.弥漫性肺部病变E.下呼吸道阻塞

作者: rantiku 人气: - 评论: 0
问题 严重三凹征的主要原因是
选项 A.肺不张 B.上呼吸道阻塞 C.混合性呼吸道阻塞 D.弥漫性肺部病变 E.下呼吸道阻塞
答案 B
解析

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