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 supports 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

根据患者基线时的洛杉矶分级和治疗后的愈合率分析显示（）

A.兰索拉唑、泮托拉唑和奥美拉唑随着疾病严重程度增加，疗效逐渐减弱

B.耐信治疗随着疾病严重程度增加，疗效降低不显著

C.耐信治疗随之疾病严重程度增加，耐信治疗获益程度不变

D.在病情越严重的患者中，耐信治疗的获益程度高于其他PPI

E.采用耐信治疗反流性食管炎的患者使得临床医师更有信心