中心静脉插管感染最常见的致病菌是
A.需氧革兰阳性球菌
B.真菌
C.厌氧菌
D.需氧革兰阴性杆菌
E.破伤风芽胞杆菌
参考答案:D
解析:中心静脉插管感染最常见的致病菌是绿脓杆菌。
All schools in our province _____ new English textbooks to improve students' listening, speaking, reading and
writing abilities three years ago. [ ]
A. admired
B. admitted
C. adopted
D. afforded
简述质量检验阶段的特点。