血液中的声速大约是()。
A.330m/s
B.1000m/s
C.1570m/s
D.5000m/s
E.8000m/s
参考答案:C
—What do you usually do at the weekend?
—I ________ the program “If You Are The One” (非诚勿扰) with my family.
A.used to watch
B.was used to watching
C.am used to watch
D.get used to watching
不支持纵隔肿瘤诊断的是()
A.透视下转动病人,肿块基底部及边缘与纵隔不能分离
B.深呼吸时肿块随呼吸上、下移动
C.纵隔肿块有宽的基底与纵隔相连
D.肿块的边缘与纵隔边缘之夹角为钝角
E.肿块最大上下径在纵隔内