男,18岁。胸部外伤,考虑存在张力性气胸,支持该诊断的症状是()
A.极度呼吸困难
B.气管向健侧移位
C.纵隔摆动
D.反常呼吸
E.呼吸困难、发绀
参考答案:A
在商店出售的进口化妆品包装上应有()。
A.卫生部颁发的许可证
B.出产国颁发的卫生质量证书
C.进口商检报告编号
D.省级以上卫生行政部门颁发的许可证
E.疾病控制部门的检验合格证
Most of the older civilizations which flourished during the fifth century B.C. are died out.
A.they have died out
B.has died out
C.have died out
D.they had died out