情报的相关概念
平面广告是一种（）广告形式。 二度空间。 时间的。 三度空间。 空间的。
Which two statements about the DiffServ model are true？（） a class can be identified as a single application， multiple applications with similar service needs，or be based on the source or destination IP address。 a drawback of the DiffServ field in the MAC header to mark frames into behavior aggregates （BAs）。 DiffServ uses the DiffServ field in the MAC header to mark frames into behavior。 the DiffServ field occupies the same eight bits of the MAC header that were previously used for the ToS field。 the first six high-order bits of the DiffServ field are used to identify the Resource Reservation Protocol （RSVP） value。 the primary goal of DiffServ is scalability。
构造解析
封闭型投资基金与开放型投资基金有何不同？
下述不属于急性冠脉综合征的是：（）
