支气管扩张常出现的体征是()
A.匙状甲
B.杵状指(趾)
C.肢端肥大症
D.爪形手
E.指间关节梭形
参考答案:B
The chairman asked many questions ________ the education of the homeless children in that area.
A.concerned
B.concerning
C.to concern
D.having concerned
M型超声心动图心室波群显示的曲线为
A.主动脉根部曲线B.左房后壁曲线C.室间隔及左室后壁曲线D.主动脉瓣后叶曲线E.三尖瓣曲线