肺实质内基本病变X线表现描述错误的是（）. ["渗出","增殖","钙化","肿块","肺门增大"] 双侧弥漫性肺气肿的X线表现描述错误的是（）. ["桶状胸","纵隔变为狭长","肺大泡","肺野透亮度增高","肺野透亮度减低"] 在影像诊断的情况下，对CT检查中的最优化是（）. ["扫描中尽量缩小扫描野","能少扫的不要多扫","能厚扫的不要薄扫","能不增强的就不增强","以上都是"] 诊断用X射线机房的副防护铅当量厚度应是（）. ["0.5mm","1.0mm","1.5mm","2.0mm","2.5mm"] 诊断用X射线机房的主防护铅当量厚度应是（）. ["0.5mm","1.0mm","1.5mm","2.0mm","2.5mm"] 放射工作条件在年有效剂量当量有可能超过15mSv／年时，定为（）.