To a router, a flow is a (1) of packets that share the same characterstics, such as traveling the same (2) , using the same (3) , having the same kind of security, and so on. A router that suppors the handling of flow labels has a (4) table. The table has an entry for each active flow label; each entry defines the (5) required by the corresponding flow label.

3（）

A．source

B．resources

C．route

D．entry

男性，25岁，腹部被倒墙压伤，中腹部剧痛伴呕吐3小时。血压120/86mmHg．体温38℃；腹胀、肌紧张、压痛、反跳痛阳性，肠鸣音消失。最可能的诊断是

A．小肠破裂

B．腹膜后血肿

C．腹壁挫伤

D．肝破裂I°

E．右肾挫伤