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"]
与IgE抗体高亲和的细胞是() ["A．树突状细胞和巨噬细胞","B．单核细胞和淋巴细胞","C．中性粒细胞和嗜碱性粒细胞","D．肥大细胞和嗜碱性粒细胞","E．红细胞和嗜酸性粒细胞"]
试述Roger病的特点?
简述房间隔缺损的心电图特点?
简述室间隔缺损的血流动力学改变导致各房室大小的变化特点?
