下列哪些病变因肺含气量减少而叩诊为浊音或实音（） ["气胸","肺梗死","肺肿瘤","肺包虫","肺气肿"]
X线管围绕人体腹背轴（前后轴）旋转的扫描方式为 ["A．横断位扫描 ","B．冠状位扫描 ","C．矢状位扫描 ","D．正位定位扫描 ","E．侧位定位扫描"]
下列肺部叩诊不是浊音或实音的是（） ["肺炎","肺囊肿","肺不张","肺水肿","肺结核"]
MSCT的层厚最小可达 ["A．5mm","B．2mm","C．3mm","D．4mm","E．0．5mm"]
决定DSA信号强度的主要因素是 ["A．X线管电压","B．X线量","C．曝光时间","D．摄影部位","E．血管内碘浓度"]
水系
