关于纵隔畸胎瘤CT表现，不正确的是() ["A．肿块位于血管前间隙","B．肿块内见脂肪密度是诊断的依据","C．囊状阴影少见","D．出现脂肪-液体平面具特征性","E．肿块可呈环状增强"]
青霉素G与普鲁卡因注射液肌内注射的结果是()青霉素G与酸性注射液配伍的结果是() ["A．增加疗效．延长作用","B．增加过敏反应的可能性","C．促进青霉素失效","D．析出沉淀","E．促使普鲁卡因水解失效"]
不支持结节病的肺内改变的是() ["A．两肺小结节影分布于肺门区的支气管血管束两侧","B．小结节影呈圆形，外形规则","C．可见斑片状磨玻璃影","D．叶间胸膜有结节样不规则增厚","E．融合的大块致密影可见支气管充气征或空洞"]
选择性IgA缺乏症禁忌输注() ["A．新鲜血","B．静脉注射丙种球蛋白","C．抗生素","D．干扰素","E．胸腺素"]
临床怀疑支气管扩张症，常规CT未见病变，应先选择哪种检查方法() ["A．增强CT扫描","B．支气管造影","C．高分辨率CT扫描","D．螺旋CT扫描加仿真内窥镜","E．支气管动脉造影"]
增溶剂是()防腐剂是()
