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与慢性支气管炎的发生关系最密切的是()

单选题
2021-12-27 21:35
A、吸烟
B、感染因素
C、理化因素
D、气候异常
E、过敏因素
查看答案

正确答案
A

试题解析
吸烟与慢支发生有密切关系。吸入烟雾可使支气管收缩痉挛,黏膜充血水肿,支气管杯状细胞增生致黏液分泌增多,黏液一纤毛清除功能降低而易发生感染。

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