支气管扩张时为了保持呼吸道引流通畅可采用()。
A.用生理盐水稀释痰液
B.祛痰药
C.支气管纤维镜吸痰
D.体位引流
E.支气管舒张药
参考答案:A, B, C, D, E
人本主义方法论
_____ the website of the Fire Department in your city, and you will learn a lot about firefighting.
[ ]
A. Having searched
B. To search
C. Searching
D. Search