下列“成神经节细胞瘤”诊断要点，哪项不对() ["A．平扫低密度，常有钙化","B．恶性肿瘤","C．儿童多见","D．明显强化","E．可沿脑脊液循环向脊髓播散"]
鉴别听神经瘤与三叉神经瘤最重要的征象是() ["A．瘤体与颅板呈锐角","B．增强幅度","C．合并出血、坏死","D．中、颅后窝骑跨生长","E．岩骨尖骨质破坏"]
卡介苗(BacillusCalmetteGuerin，BCG)
健康(health)
类毒素(toxoid)
婴儿死亡率(infantmortalityrate，IMR)
