侵袭性操作的高危因素()
A.留置导尿管
B.静脉导管
C.气管插管
D.器官移植
E.吸取痰液
参考答案：A, B, C, D, E
This is that most of Chinese people become excited. [ ]
A. such good news
B. so good a news
C. such a good news
