1949年北平和平解放，人民解放军举行人城仪式，受阅部队与群众游行队伍从东交民巷

全面落实状态检修管理标准、技术标准和工作标准，实现状态检修工作（）。

A.常态化管理

B.精益化管理

C.制度化建设

D.标准化建设

For (21) service，we need a virtual-circuit subnet．Let US see how that works．The idea behind virtual circuits is to avoid having to choose a new (22) for every packet sent．Instead， when a connection is established，a route from the (23) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (24) ．That route is used for all traffic flowing over the connection，exactly the same way that the telephone system works． When the connection is released．the virtual circuit is also tenninated．With connection-oriented service，each packet carries an (25) telling which virtual circuit it belongs to．

A．processor

B．device

C．route

D．terminal

阀控式铅蓄电池规定的工作条件一般为：（）小时率电流发电，电池温度为（）度，放电终了电压为（）。

，塔釜液位过高或过低，造成物料在再沸器中的停留时间延长，增加聚合的可能性。