第13题:[多选题]【多选题】 在RSTP协议中定义了与STP中不同的端口角色,其中不能处于转发状态的端口角色的是? A.Root Port B.Designated Port C.Backup Port D.Alternate Port 参考答案:CD 在RSTP协议中,对STP的端口角色更加细化了,将之前的非指定接口细化为了两种:替代接口和备份接口。 这两种接口的最终状态是 DISCARDING。所以正确答案是“Backup Port”、“Alternate Port”。【by 徐会刚】
A. harmful to people B. a weak point of shy people C. the cause of unhappiness D. a good quality 参考答案:D 答案解析:[解析] 作者态度题。本题问的是:作者认为有自知之明是______。依据文章第3段最后一句“It is clear that,while serf-awareness is a healthy qua
第29题: [填空题]What are the argument against the private ownership of genome patents A. A.Doctors are not permitted to do gene tests without buying patents B.The ownership may slow down the research progress C.The codes for height and intelligence will be revealed.