[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fgn3qGXy_lfEtVVoPxbohcpKAOzoUmc7OGsISt1BX_mo":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-12-07 10:09:25",253438456,[8,9,10,11],"线性,非线性","零状态,零输入","频域,时域","齐次,非齐次",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},183,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","exam_168271203","信号与系统","信号的失真分为()失真和()失真两大类",[21,32,41,50,59,68,77,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],253438450,[25,26,27,28],"非周期连续频谱","周期连续频谱","周期离散频谱","非周期离散频谱","连续周期信号f(t)的频谱F(jw)的特点是()","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],253438451,[36,37,38,39],"4","5","3","2","对于具有6条支路、4个节点的连通电路来说,可以列出独立的KVL方程的最大数目是()",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],253438452,[45,46,47,48],"以上答案都对","零状态线性","分解特性","零输入线性","线性系统具有()",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],253438453,[54,55,56,57],"1","0","无穷大","不存在","应用傅立叶变换时域微分性的条件是当时间趋于无穷时,函数趋于()",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],253438454,[63,64,65,66],"单位阶跃响应,时域特性","单位冲击响应,时域特性","单位冲击响应,频率特性","单位阶跃响应,频率特性","频域系统函数就是系统()的傅里叶变换,描述了系统的()",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],253438455,[72,73,74,75],"先平移,再尺度变换,最后反折","先尺度变换,再平移,最后反折","先反折,再尺度变换,最后平移","先平移,再反折,最后尺度变换","信号平移、反转和尺度变化的最佳作图顺序是()",{"answer":78,"createTime":5,"id":6,"options":79,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],253438457,[84,85,86,87],"δ(ω-ω0)","2πδ(ω-ω0)","δ(ω+ω0)","2πδ(ω+ω0)","信号f(t)=ejω.t的傅里叶变换为()",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],253438458,[93,94,95,96],"2π\u002F3","2π","6π","π","信号f(t)=cos2t+sin3t周期为()",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],253438459,[102,103,104,105],"频谱是离散、谐波、收敛性的","频谱是连续、收敛的","频谱是离散、谐波、周期性的","频谱是连续、周期性的","周期性连续时间信号的频谱,其特点为()"]