小儿秋季腹泻常见的病原体是
A.大肠杆菌B.空肠弯曲菌C.柯萨奇病毒D.轮状病毒E.埃可病毒
参考答案:D
细胞酶制剂的无菌处理,应当选择()
A.滤过除菌法
B.紫外线照射消毒法
C.γ射线处理法
D.高压灭菌法
E.巴氏消毒法
In my opinion, obviously, night-time is when children can begin to learn to feel confident ______, without being dependent on anyone else.
A.by their own
B.on their own
C.with their own
D.to their own