[名词解释] Beck三联征

支气管扩张症可合并() ["A．肺脓肿","B．脓气胸","C．肺气肿","D．肺心病","E．胸膜炎"] 连枷胸 心脏压塞 气胸 下列哪几项是支气管哮喘的发病因素() ["A．过敏","B．呼吸道感染","C．精神因素","D．饮食因素","E．以上都可以"] Beck三联征