[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fsOWIWsftHnD84Zk2d5of7hdr8ADHNLBZyoqKZn_Mhu4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2023-09-10 12:20:36",96699751,[8,9,10,11],"有效性","可靠性","适应性","标准性",{"courseId":13,"courseImg":14,"courseName":15},"1f28926e1c3d37306b254fcce7f9ba60","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25b30343053994e8940089572d36015b.jpg","通信原理","在数字通信系统中,传输速率属于通信系统性能指标中的()",[18,29,38,47,56,65,73,76,85,94],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],96699738,[22,23,24,25],"连续起伏","离散不可数","有限可数","无限可数","数字消息是","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],96699740,[33,34,35,36],"1bit","2bit","3bit","4bit","八进制的每一波形包含的信息量",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],96699741,[42,43,44,45],"调制解调器","电缆","网线","光纤","按照狭义信道的定义,不属于信道的是",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],96699744,[51,52,53,54],"数字信号和模拟信号","语音信号和图像信号","二进制信号和多进制信号","其它","按照幅度取值是连续的还是离散的,信号可以分类为",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":27,"type":28},[],96699746,[60,61,62,63],"信源","载体","信宿","噪声","信息的传输媒体也称为",{"answer":66,"createTime":5,"id":67,"options":68,"question":72,"source":27,"type":28},[],96699748,[45,69,70,71],"双绞线","无线信道","同轴电缆","在常用的传输媒体中,带宽最宽、信号传输衰减最小,抗干扰能力最强的是",{"answer":74,"createTime":5,"id":6,"options":75,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":77,"createTime":5,"id":78,"options":79,"question":84,"source":27,"type":28},[],96699753,[80,81,82,83],"波特","比特","波特\u002Fs","比特\u002Fs","以下属于码元速率单位的是( )",{"answer":86,"createTime":5,"id":87,"options":88,"question":93,"source":27,"type":28},[],96699755,[89,90,91,92],"占用频带小","抗干扰能力强","传输容量大","易于频分复用","数字通信相对于模拟通信具有( )",{"answer":95,"createTime":5,"id":96,"options":97,"question":98,"source":27,"type":28},[],96699757,[42,43,44,45],"按照狭义信道的定义,不属于信道的是()"]