[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fO3WNWlqNGQpEkyYjUSp__4MGouq4BqxFbmYseIotqhc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":18,"related":19,"source":29,"type":48},[],"2025-03-13 20:28:34",179086557,[8,9,10],"1","1.5","2",{"count":12,"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},12,"f855e61c0b50d3298e2bde4a63b84910","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F97d0dd6c60e3625d8049a982e913325d.jpg","通信原理","815c4fdcad22480d803e990a4969ceff","章节测验","无码间串扰传输时,基带系统的最高频带利用率是( )B\u002FHz",[20,31,40,49,55,63,68,73,81,84],{"answer":21,"createTime":5,"id":22,"options":23,"question":28,"source":29,"type":30},[],179086544,[24,25,26,27],"最佳抽样时刻是&quot;眼睛&quot;张开最大的时刻","定时误差灵敏度是眼图斜边的斜率,斜率越小,对位定时误差越敏感","眼图中央的横轴位置对应于判决门限电平","眼图的&quot;眼睛&quot;张开越大,且眼图越端正,表示码间串扰越小","下列关于眼图的说法正确的是( )","v1",1,{"answer":32,"createTime":5,"id":33,"options":34,"question":39,"source":29,"type":30},[],179086546,[35,36,37,38],"二进制随机脉冲序列的功率谱可能包含连续谱和离散谱","连续谱总是存在的","离散谱总是存在的","根据离散谱可以确定随机序列是否含有直流分量和定时分量","关于二进制随机脉冲序列的功率谱密度说法正确的是( )",{"answer":41,"createTime":5,"id":42,"options":43,"question":47,"source":29,"type":48},[],179086548,[44,45,46],"正确","错误","不确定","数字基带信号的功率谱密度分为连续谱和离散谱,由连续谱可以确定信号的带宽, 由离散谱可以确定信号的位定时分量,这一说法是( )",0,{"answer":50,"createTime":5,"id":51,"options":52,"question":54,"source":29,"type":48},[],179086550,[53,36,37],"连续谱和离散谱总是存在的","数字基带信号的功率谱密度分为连续谱和离散谱,下列说法正确的是( )",{"answer":56,"createTime":5,"id":57,"options":58,"question":62,"source":29,"type":48},[],179086552,[59,60,61],"带宽相同","都不存在位定时分量","都存在直流分量","1等概条件下,关于单极性不归零码和50%占空比的归零码,下列说法正确的是( )",{"answer":64,"createTime":5,"id":65,"options":66,"question":67,"source":29,"type":48},[],179086554,[44,45,46],"1等概条件下,单、双极性不归零码的带宽相同,这一说法是( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":72,"source":29,"type":48},[],179086555,[44,45,46],"数字基带系统的传输总特性是由发送滤波器和接收滤波器组成的,这一说法是( )",{"answer":74,"createTime":5,"id":75,"options":76,"question":80,"source":29,"type":48},[],179086556,[77,78,79],"最高","最低","两者都不是","奈奎斯特速率是无码间串扰传输时的( )波特率",{"answer":82,"createTime":5,"id":6,"options":83,"question":18,"source":29,"type":48},[],[8,9,10],{"answer":85,"createTime":5,"id":86,"options":87,"question":88,"source":29,"type":48},[],179086558,[44,45,46],"在数值上,奈奎斯特速率是奈奎斯特带宽的2倍,这一说法是( )"]