梅尼埃病的基本病理改变是() ["A．膜迷路纤维化","B．膜迷路充血","C．膜迷路积水","D．螺旋器退行性变","E．血管纹萎缩"]
何谓法洛三联征、四联征、五联征?法洛四联征的典型X线表现如何?
现公认支气管哮喘的发病机制是() ["A．慢性气道炎症","B．单纯平滑肌痉挛","C．单纯遗传因素引起","D．单纯环境因素引起","E．单纯过敏因素"]
过敏性紫癜发病前常见的前驱症状为() ["A．上呼吸道感染史","B．慢性腹痛","C．外科手术","D．链球菌感染","E．剧烈运动"]
甘油试验阳性提示引起耳聋的因素是() ["A．突发性耳聋","B．耳硬化","C．药物性聋","D．膜迷路积水","E．听神经瘤"]
肺动脉狭窄有何X线表现?
