革兰阴性细菌败血症病原治疗应首选()
A.第三代头孢菌素
B.氨基苷类抗生素
C.大环内酯类抗生素
D.磺胺类药
E.喹喏酮类药物
参考答案:A
His father and mother often argue_________ what TV programmes _________.
A.with; watching
B.about; watching
C.with; to watch
D.about; to watch
因特网协议中TCP的功能是什么,IP的作用又是什么?