严重低钾血症患者主要死于() ["A．心肌收缩性降低","B．心肌传导性降低","C．心肌自律性降低","D．肾功能严重障碍","E．呼吸衰竭"]
来自细支气管Clara细胞和Ⅱ型肺泡细胞的癌为() ["A．腺癌","B．细支气管肺泡癌","C．大细胞癌","D．类癌","E．小细胞癌"]
简述室间隔缺损的手术治疗原则?
常于早期即发生淋巴转移的肺癌是() ["A．鳞状上皮癌","B．小细胞未分化癌","C．腺癌","D．大细胞未分化癌","E．细支气管肺泡癌"]
下列哪种类型的肺癌易形成空洞() ["A．小细胞未分化癌","B．大细胞未分化癌","C．腺癌","D．肺泡上皮癌","E．鳞状上皮癌"]
简述室间隔缺损的X线特点?
