[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f6rcL80f979OK2PG-fPYyrnc6XrLPdKXGwRqzvkFGZcQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":16,"related":17,"source":27,"type":44},[],"2023-05-08 10:00:02",35606878,[8,9],"对","错",{"courseId":11,"courseImg":12,"courseName":13,"workId":14,"workName":15},"1000006995","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F32f536fd66e217ecefecad758546ec9b.png","通信原理（黑龙江联盟）","22901377","通信原理（黑龙江联盟）教程考试","分集接收技术主要是为了解决随参信道中的快衰落影响.( )",[18,29,39,45,54,59,64,73,78,81],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],35606839,[22,23,24,25],"误信率","接收信噪比","误码率","频带利用率","数字通信系统的可靠性可以用( )来衡量","v2",1,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":38},[],35606844,[33,34,35,36],"幅度","频率","绝对相位","相对相位","PSK是利用载波的( )来表示符号进行信息传输",0,{"answer":40,"createTime":5,"id":41,"options":42,"question":43,"source":27,"type":44},[],35606850,[8,9],"第四代移动通信的交换方式为电路交换与分组交换并存.( )",3,{"answer":46,"createTime":5,"id":47,"options":48,"question":53,"source":27,"type":38},[],35606852,[49,50,51,52],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0c82898858f8bc7c547b935b9645889e.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff7cc1acf076ac380612b536ce21ca91c.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F98864ef204f6183741a2a97416759fcc.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0c6a5ab0761ea5872c694aa319bb5073.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F53cd234fa4675d0501041aef2b385ab7.png\">",{"answer":55,"createTime":5,"id":56,"options":57,"question":58,"source":27,"type":44},[],35606853,[8,9],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F66d6881edeb50453cb4240ca0d7bee65.png\">",{"answer":60,"createTime":5,"id":61,"options":62,"question":63,"source":27,"type":44},[],35606858,[8,9],"MSK和2FSK区别只在于前者的| f2-f1 |更小.( )",{"answer":65,"createTime":5,"id":66,"options":67,"question":72,"source":27,"type":38},[],35606867,[68,69,70,71],"时间和幅值的离散","幅值上的离散","时间上的离散","频谱上的离散","通过抽样可以使模拟信号实现( )",{"answer":74,"createTime":5,"id":75,"options":76,"question":77,"source":27,"type":44},[],35606874,[8,9],"人类进入现代通信时代的标志是约翰&middot;惠勒在1983年提出&quot;It from bit&quot;的参与宇宙观点来说明量子信息对宇宙的决定.( )",{"answer":79,"createTime":5,"id":6,"options":80,"question":16,"source":27,"type":44},[],[8,9],{"answer":82,"createTime":5,"id":83,"options":84,"question":85,"source":27,"type":44},[],35606879,[8,9],"DSB信号调制效率比AM信号高,因为DSB信号中不存在载波分量,全部功率都用于信息传输.( )"]