IEEE 802.11支持的网络类型是( )。A．光纤传感网 B．无线VPN C．_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

IEEE 802.11支持的网络类型是( )。

A．光纤传感网

B．无线VPN

C．无线广域网

D．无线局域网

答案

参考答案：D

解析：11是IEEE最初制订的一个无线局域网标准，主要用于解决办公室局域网和校园网中，用户与用户终端的无线接入，业务主要限于数据存取，速率最高只能达到2Mbps。因此D正确。

填空题

请用方框中所给词的适当形式完成这篇短文，并把所缺单词填写在答题卡指定的位置上。
每个空只能填写一个形式正确、意义相符的单词。

pronounce, easy, try, learn, how, the, it, spend, by, but

I am a student in Grade Three. I began to learn English the year before last year. English isn’t very小题1:        to learn. But I like it very much.
小题2:        do I study English?
In the first year, I found小题3:         very difficult to memorize new words. At first I小题4:        a lot of time on them. I learned new words only小题5:         reading
and writing them.小题6:        a few days later I forgot them. Later, with小题7:        help of my teachers, I came to know how to do it well. I paid more attention to小题8:        and spelling. In this way, I have小题9:        a lot of new words by heart. Every morning after I get up, I do some reading. At school I小题10:       to speak English with my classmates and review what I have learned.
Nothing is too hard if you put your heart into it.

判断题

所有的固定资产变动记录都可以生成凭证，并且多项记录可以汇总生成一张凭证。