肺活量是指（）

A.尽力吸气后快速呼出的气量

B.尽力吸气后缓慢而完全呼出的最大气量

C.快速吸气后快速呼出的最大气量

D.肺所能容纳的最大气量

E.尽力吸气后尽最大努力快速呼气时第1s所能呼出的气体容量

The Border Gateway Protocol (BGP) is an interautonomous system. （1）protocol. The primary function of a BGP speaking system is to exchange network（2）information with other BGP system. This network reachability information includes information on the list of Autonomous System (ASs) that teachability information traverses. BGP-4 provides a new set of mechanisms for supporting （3） interdomain routing. These mechanisms include support for advertising an IP （4）and eliminate the concept of network class within BGP. BGP-4 also introduces mechanisms that allow aggregation of routes, including（5）of AS paths. These changes provide support for the proposed supernettting scheme.

5（）

A.reservation 

B.utilization 

C.aggregation 

D.connection