化脓性感染形成脓肿后,外科治疗的基本原则是()
A.立即切开引流
B.改用其他抗生素
C.配合局部物理疗法
D.全身加大抗生素剂量
E.加用肾上腺皮质激素
参考答案:A
Don't pretend __________;after all, we are only lookers-on.
A. to know what is what '
B. to know what was what
C. knowing what is what
D. knowing what was what
什么是学前心理学?其研究对象是什么?