Routing protocols use different techniques for assigning (37) to individual networks. Further, each routing protocol forms a metric aggregation in a different way. Most routing protocols can use multiple paths if the paths have an equal (38) Some routing protocols can even use multiple paths when paths have an unequal cost. In either case, load (39) can improve overall allocation of network bandwidth. When multiple paths are used, there are several ways to distribute the packets. The two most common mechanisms are per-packet load balancing and per-destination load balancing. Per-packet load balancing distributes the (40) across the possible routes in a manner proportional to the route metrics. Per-destination load balancing distributes packets across the possible routes based on (41)

40（）

A.destinations 

B.resources 

C.packets 

D.sources

《特种设备安全监察条例》第八十三条规定：特种设备使用单位有下列情形的，由特种设备安全监督管理部门责令限期改正；逾期未改正的，处2000元以上2万元以下罚款；情节严重的，责令停止使用或者停产停业整顿：特种设备不符合（）指标，未及时采取相应措施进行整改的。

A、节能；

B、能效；

C、设计；

D、规定。