A multicast router may receive thousands of multicast (6) every day for different groups. If a router has no knowledge about the membership status of the (7) , it must broadcast all of these packets. This creates a lot of traffic and consumes (8) . A better solution is to keep a list of groups in the network for which there is at least one loyal member. (9) helps the multicast router create and update this list. For each group, there is one router that has the duty of distributing the (10) packets destined for that group. This means that if there are three multicast routers connected to a network, their lists of groupids are mutually exclusive. A host or multicast router can have membership in a group.

A．anycast

B．multicast

C．unicast

D．broadcast

《治安管理处罚条例》规定：“违反治安管理行为在6个月内，没有发现的，不再追究。”1995年2月1日，高某殴打他人造成轻微伤。同年10月公安机关根据举报得知高某打人的事实，对高某作出行政处罚，公安机关的处罚决定属于下列哪种违法形式？（）

A、超越职权

B、滥用职权

C、违反法定程序

D、显失公平