The RCP proposed in this paper adopts the location server approach for location management and the blackboardapproach for message delivery.
RCP机制采用定位服务器来进行位置管理，同时使用黑板进行消息传递。
2
Some teachers simply apply the modern IT method by replacing the explanation with the multimedia and blackboard writing with a projector, regardless of the teaching content, approach, and objectives.