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通信英语I单项选择1.抽样频率a.samplingrateb.repetitionratec.samplingfrequency答案:c2.数字通信a.digitalcommunicationb.digitaltransmissionc.transmissionpath答案:a3.帧格式a.synchronizationwordb.frameformatc.reverseoperation答案:b4.噪声功率a.noisyenvironmentb.signallevelsc.noisepower答案:c5.含噪声的环境a.signallevelsb.noisyenvironmentc.noisepower答案:b6.模拟信号a.speechchannelb.analogsignalc.amplitudevalue答案:b7.脉冲流a.streamofpulsesb.receivingterminalc.terrestrialsystem答案:a8.传输路由a.transmissionpathb.transmissionqualityc.binarytransmission答案:a9.互联网a.networkresourceb.Internetc.interconnectedsystems答案:b10.命令a.copyb.hostc.command答案:c11.拷贝a.addressb.mousec.copy答案:c12.搜索工具a.userinterfaceb.searchingtoolsc.electronicmail答案:b13.存取a.accessb.protocolc.copy答案:a14.网络资源a.textualmessagesb.remoteterminalsc.networkresources答案:c15.文本信息a.informationservicesb.hypertextprotocolc.textualmessages答案:c16.频谱a.bandwidthb.spreadspectrumc.frequencyband答案:b17.移动手机a.mobilesubscriberb.mobileunitc.serviceperformance答案:b18.频带a.frequencyspectrumb.frequencybandc.spreadspectrum答案:b19.蜂窝交换机a.cellularswitchb.cellularsitec.mobileunit答案:a20.单边带a.single-sidebandb.bandwidthc.servicearea答案:a21.服务区a.serviceareab.serviceperformancec.servicecapability答案:a22.移动用户a.mobileunitb.mobilesubscriberc.mobiletransceiver答案:b23.微处理器a.subsystemsb.utilizationc.microprocessor答案:c24.无线机架a.radiocabinetb.antennac.mobileunit答案:a25.电路交换a.packetswitchingb.circuitswitchingc.messageswitching答案:b26.分组交换a.packetswitchingb.circuitswitchingc.messageswitching答案:a27.报文交换a.packetswitchingb.circuitswitchingc.messageswitching答案:c28.专用电路a.dedicatedcircuitb.errorcontrolc.returnsignal答案:a29.突发性a.burstyb.randomc.header答案:a30.传输时延a.destinationaddressb.transmissiondelayc.returnsignal答案:b31.中间交换设备a.givenmaximumb.intermediateswitchingequipmentc.store-and-forwardmanner答案:b32.子网a.headerb.subnetc.busty答案:b33.公众电信网a.publictelecommunicationnetworkb.intermediateswitchingnodec.circuit-switchednetwork答案:a34.半双工的a.full-duplexb.half-duplexc.externalcall答案:b35.端局a.tollcenterb.endofficec.tandemswitch答案:b36.外部呼叫a.externalcallb.datatrafficc.tollcenter答案:a37.链路a.trunkb.linkc.route答案:b38.交换节点a.intermediateswitchingnodeb.voice-frequencycircuitc.switchingnode答案:c39.音频电路a.telephonesubscriberb.voice-frequencycircuitc.twowireconnection答案:b40.拓扑a.internodesb.topologyc.route答案:b41.二线连接a.datatrafficb.endofficec.twowireconnection答案:c42.数据流量a.datatrafficb.tandemswitchc.tollcenter答案:a43.全球通信a.interfaceequipmentb.globalcommunicationc.communicationcarriers答案:b44.脉码调制a.pulsecodemodulationb.voiceencodingc.opennetwork答案:a45.接口设备a.switchingequipmentb.transmissionmediumc.interfaceequipment答案:c46.综合业务数字网a)end-to-enddigitalconnectivityb.internationalorganizationforstandardizationc.integratedservicesdigitalnetwork答案:c47.通信载体a.communicationcarriersb.transmissionmediumc.interfaceequipment答案:a48.系统结构a.infrastructurec.flexibilityd.basicaccess答案:a49.蜂窝式移动电话a.cellularswitchb.cellularmobiletelephonec.cellularsite答案:b50.数据传输a.datatransmissionb.transmissionerrorc.errorflag答案:a51.传号电平a.spacelevelb.logicallevelc.marklevel答案:c52.接收机的定时a.intersymbolspaceb.serialinterfacec.receivertiming答案:c53.明显的缺点a.transmissionerrorb.obviousdisadvantagec.errorflag答案:b54.起始位a.startbitb.stopbitc.paritybit答案:a55.空号电平a.marklevelb.spacelevelc.theidlestate答案:b56.控制比特a.binarydatab.localclockc.controlbit答案:c57.串行接口a.datastreamb.CRTterminalc.serialinterface答案:c58.发送器和接收器a.transmitterandreceiverb.receivertimingc.durationofTseconds答案:a59.二进制数据a.binarydatab.datastreamc.datatransmission答案:a60.高速电子开关a.thevoicechannelb.therepetitionratec.ahigh-speedswitch答案:cII.根据所给英文选择合适的答案1.digitalcommunicationa.全球通信b.公共通信载体c.数字通信答案:c2.voiceencodingtechniquesa.语音编码技术b.脉冲c.脉冲编码调制答案:a3.basicaccesssignalingratea.大量的接口设备b.基本接入信令速率c.统一的接入答案:b4.theInternationalOrganizationforStandardizationa.综合业务数字网b.ISDN的标准和系统结构c.国际标准化组织答案:c5.end-to-enddigitalconnectivitya.基本接入信令速率b.端对端的数字连接c.语音编码技术答案:b6.progressiveapplicationofdigitaltechnologya.由于传输媒体导致的质量下降b.4KHz话路中所固有的带宽限制c.数字技术的逐步应用答案:c7.enhancedqualitya.高质量b.带宽的限制c.统一的接入答案:a8.thebranchesbetweennodesa.节点间的支路b.中间交换节点c.全双工的连接答案:a9.treetopologya.双绞线b.结构部件c.树状拓扑答案:c10.backbonehierarchicalnetworka.国家网络b.被分离开的子网c.主干体系网络答案:c11.thesubscriberthattransmitdigitalsignala.发送数字信号的用户b.一小部分用户c.相邻的端局答案:a12.multiplevoice-frequencycircuitsa.高效中继线b.多音频电路c.同步时分复用答案:b13.thefunctionofconcentratingtraffica.集中话务量的功能b.路由选择的基本次序c.发送数字信号的用户答案:a14.fullduplexa.全双工的连接b.全连通性c.全双工的答案:c15.transmissionfacilitiesa.传输设备b.交换区c.高效中继线答案:a16.switchingtechniquea.交换技术b.电路交换c.分组交换答案:a17.messageswitchinga.交换技术b.报文交换c.分组交换答案:b18.communicationpartiesa.传输单元b.通信各方c.返回信号答案:b19.thespecialsignalingmessagea.存储转发传输技术b.带宽的动态分配c.特定的信令信息答案:c20.lowchannelutilizationa.低的电路利用率b.报文整个的传输时延c.传输单元答案:a21.totalpathofconnectedlinesa.连线的整个通路b.源到目的地的一对c.带宽的动态分配答案:a22.radiocabineta.无线通信行业b.无线机架c.多径衰耗答案:b23.telephonecompanyzoneofficesa.移动收发信机b.电话公司地方局c.中央协调单元答案:b24.availableradiofrequencyspectruma.所分配的频带b.调频广播业务c.可用的无线电频谱答案:c25.centralcoordinatingelementa.中央协调单元b.试验性的蜂窝系统c.有限的服务能力答案:a26.severespectrumlimitationsa.严厉的频谱限制b.有限的服务能力c.有限的指定频带答案:a27.developmentalcellularsystema
本文标题:1 通信英语知识
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