[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f0BV_JZKuy4aiLE_aziHPSV14wzZGNeHamblcXPwZQi8":3},{"id":4,"source":5,"question":6,"options":7,"answer":8,"related":9,"type":16,"origin":88,"createTime":18},261726906,"v1","在PCM编码中,最小量化间隔为1\u002F1024.( )",[],[],[10,19,25,31,37,43,47,58,68,78],{"id":11,"source":5,"question":12,"options":13,"answer":14,"related":15,"type":16,"origin":17,"createTime":18},261726901,"对讲机使用的是单工通信方式.( )",[],[],[],3,null,"2025-12-12T13:02:03+08:00",{"id":20,"source":5,"question":21,"options":22,"answer":23,"related":24,"type":16,"origin":17,"createTime":18},261726902,"平稳随机过程是指数学期望与时间无关,且自相关函数与时间间隔无关的随机过程.( )",[],[],[],{"id":26,"source":5,"question":27,"options":28,"answer":29,"related":30,"type":16,"origin":17,"createTime":18},261726903,"调制信道中的加性干扰是始终存在的.( )",[],[],[],{"id":32,"source":5,"question":33,"options":34,"answer":35,"related":36,"type":16,"origin":17,"createTime":18},261726904,"HDB3码保持了AMI码的优点,并且使连\"0\"个数不超过3个.( )",[],[],[],{"id":38,"source":5,"question":39,"options":40,"answer":41,"related":42,"type":16,"origin":17,"createTime":18},261726905,"2FSK和2ASK对信道特性变化不敏感,而2PSK对信道特性变化敏感.( )",[],[],[],{"id":4,"source":5,"question":6,"options":44,"answer":45,"related":46,"type":16,"origin":17,"createTime":18},[],[],[],{"id":48,"source":5,"question":49,"options":50,"answer":55,"related":56,"type":57,"origin":17,"createTime":18},261726907,"下列关于数字通信特点的描述中,错误的是( )",[51,52,53,54],"抗干扰能力强,噪声不积累","易于加密处理,保密性好","需要较大的传输带宽","同步要求高,设备简单",[],[],0,{"id":59,"source":5,"question":60,"options":61,"answer":66,"related":67,"type":57,"origin":17,"createTime":18},261726908,"一个均值为零的平稳高斯窄带噪声,其包络的一维分布服从( )",[62,63,64,65],"高斯分布","均匀分布","瑞利分布","莱斯分布",[],[],{"id":69,"source":5,"question":70,"options":71,"answer":76,"related":77,"type":57,"origin":17,"createTime":18},261726909,"下面哪一个不是传输电信号的有线信道( )",[72,73,74,75],"明线","对称电缆","光纤","同轴电缆",[],[],{"id":79,"source":5,"question":80,"options":81,"answer":86,"related":87,"type":57,"origin":17,"createTime":18},261726910,"若基带信号的带宽为15kHz,SSB信号的带宽为( )kHz",[82,83,84,85],"10","7.5","20","15",[],[],{"courseName":89,"courseImg":90,"workName":89,"workId":91,"count":92,"courseId":93},"通信原理**","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2855e75c28df2e19e2708b4e90f70e66.png","exam_167853064",24,"81274fedd4177164c9dacaae979aeb3a"]