首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
计算机
In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.Microwave communi
In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.Microwave communi
admin
2009-05-15
48
问题
In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.Microwave communication uses high-frequency(26)waves that travel in straightlines through the air. Because the waves cannot(27)with the curvature of the earth, they can be(28)only over short distance. Thus, microwave is a good(29)for sendingdata between buildings in a city or on a large college campus. For longer distances, the waves must be relayed by means of "dishes" or(30). These can be installed on towers, high buildings, and mountain tops.
选项
A、material
B、equipment
C、medium
D、channel
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/RhJZ777K
本试题收录于:
网络工程师上午基础知识考试题库软考中级分类
0
网络工程师上午基础知识考试
软考中级
相关试题推荐
信息系统集成项目完成验收后要进行一个综合性的项目后评估,评估的内容一般包括_________________。
以下各项措施中,不能够有效防止计算机设备发生电磁泄漏的是______。
ExtremeProgramming(XP)isadisciplineofsoftwaredevelopmentwith(71)ofsimplicity,communication,feedbackandcourage
ExtremeProgramming(XP)isadisciplineofsoftwaredevelopmentwith(71)ofsimplicity,communication,feedbackandcourage
Themostwell-knownmomberoftheethemetprotocolfamilyisIEEE802.11,otherwiseknownas().
Anoperatingsystemalsohastobeabletoserviceperipheral(1),suchastimers,motors,sensors,communicationdevices,disks,etc.A
Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up(71)at the custom
Inthefollowingessay,eachblankhasfourchoices.Choosethemostsuitableonefromthefourchoicesandwritedowninthean
Multipurpose Internet MaiI Extension (MIME) is a(71)document messaging standard in the Internet enviroment, with MIME, users can
Flowcontrolisafunctionthatpreventsnetworkcongestionbyensuringthat(71)donotoverwhelm(72)withdata.Therearethre
随机试题
A、苯巴比妥B、地西泮C、司可巴比妥D、硫喷妥钠E、水合氯醛可用于静脉麻醉的是
下列属于动物专用的解热镇痛抗炎药为
药物用串料法粉碎药物用加液研磨法粉碎
工程检测人员参与中间产品质量资料复核应具有()以上工程系列技术职称。
委托的内容有多项,正确填写委托单或输入委托指令投资决策得以实施和投资者权益得以保护的重要环节。()
我国家庭户的主体是()组成的家庭。
存货计价方法的选择只影响着资产负债表中资产总额的多少,不会影响利润表中的净利润。( )
早在1985年,国务院就批准建立了产品质量国家监督抽查制度,并授权国家技术监督局统一组织实施此项工作。这一举措主要是针对当时全国许多产品质量出现大面积滑坡,部分企业质量管理工作松弛的状况,及时有效地监督产品质量状况以确保国民经济稳定运行,根据《产品质量法》
设(-1)n-1an=2,a2n-1=5,则=______.
Letnandkbepositiveintegerswithk
最新回复
(
0
)