问题
单项选择题
在IP报头中，________用来表示该数据报对应的IP协议版本号。
A．数据区
B．服务类型
C．协议域
D．版本域
答案
参考答案：D
解析：[知识点] IP数据报[评析] IP数据报的格式可以分为报头区和数据区两大部分。在IP报头中，版本域表示与该数据报对应的IP协议版本号，不同IP协议版本规定的数据报格式稍有不同。
搜题请搜索小程序“爱下问搜题”
在IP报头中，________用来表示该数据报对应的IP协议版本号。
A．数据区
B．服务类型
C．协议域
D．版本域
参考答案：D
解析：[知识点] IP数据报[评析] IP数据报的格式可以分为报头区和数据区两大部分。在IP报头中，版本域表示与该数据报对应的IP协议版本号，不同IP协议版本规定的数据报格式稍有不同。
请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入最恰当的单词。 注意：每个空格只填1个单词。请将答案写在答题纸上相应题号的横线上。 Many people would like to watch sport matches .First，you need to know about audience manners． Most sporting arenas （竞技场） have rules for spectators written on the back of the tickets. Read your ticket carefully before you arrive．Try to reach your seat half an hour before the start of the event and don’t leave when a game is in progress．When you leave，remember to take away your soft drink bottles and other rubbish． During exciting games, try to control yourself. Don’t criticize the performance of players and coaches．Be careful with your words, since some may cause anger among other people in the audience． Applause is a special form of body language you can use to communicate with players，but you should do it properly ．When players first appear，clap your hands together to welcome them, but don’t go on for too long. After an excellent performance, applaud warmly. If someone fails, your applause will help encourage them. Applause is not welcome, however, while players need to keep their concentration. Various sports have various rules for the audience． Enjoying artistic gymnastics silence．But lots of cheering can really help basketball and football players. Snooker and table tennis courtside behavior includes a ban on flash photography. Mobile phones are not allowed in shooting centers. To be a good spectator, you should take time to learn the game－specific rules and related culture of each event Good Audience小题1:__
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