婴儿下呼吸道解剖特点是A．黏液腺分泌不足B．管腔相对狭窄C．纵隔组织缺乏弹力D．肺间质发育差E．肺血管发育差

作者: rantiku 人气: - 评论: 0

问题婴儿下呼吸道解剖特点是

选项 A．黏液腺分泌不足 B．管腔相对狭窄 C．纵隔组织缺乏弹力 D．肺间质发育差 E．肺血管发育差

答案 B

解析

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