[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fyV6uArO4iXRcssjCOX56mRBMjP_EXuQ5qKPScaxviT4":3},{"id":4,"source":5,"question":6,"options":7,"answer":8,"related":9,"type":113,"origin":114,"createTime":22},288996120,"v1","已知微分方程是y''(t)+5y'(t)+4y(t)= f '(t)+4 f (t),其对应的特征根是-1和-4",[],[],[10,23,33,43,53,63,73,83,93,103],{"id":11,"source":5,"question":12,"options":13,"answer":18,"related":19,"type":20,"origin":21,"createTime":22},288996067,"下列叙述正确的是 ( )",[14,15,16,17],"各种数字信号都是离散信号","各种离散信号都是数字信号","数字信号的幅度只能取1或0","将模拟信号抽样直接可得数字信号",[],[],0,null,"2025-12-27T09:43:37+08:00",{"id":24,"source":5,"question":25,"options":26,"answer":31,"related":32,"type":20,"origin":21,"createTime":22},288996070,"从观察的初始时刻起不再施加输入信号,仅由该时刻系统本身具有的起始状态引起的响应称为( )",[27,28,29,30],"零输入响应","零状态响应","瞬态响应","稳态响应",[],[],{"id":34,"source":5,"question":35,"options":36,"answer":41,"related":42,"type":20,"origin":21,"createTime":22},288996071,"\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F97667983e5f2b246dce54b90e456794d.png\">",[37,38,39,40],"是偶函数","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F7a414011aeefbc2cbadd638f3f239f8b.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F6259878341079cebf3ba1bb985758de0.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Ff70bb50e4c43172a77440e304470e058.png\">",[],[],{"id":44,"source":5,"question":45,"options":46,"answer":51,"related":52,"type":20,"origin":21,"createTime":22},288996074,"某连续时间系统,其起始状态为\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002FfnfJBsep61NLp8ysRUDRQQ==\u002F6631396519676435221.png\">, 输入激励为\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002FmdupcFxlsOkyvuscItqFIQ==\u002F6608438716887735791.png\">,系统的完全响应为\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002FAn0Bj4yw02TeJvCw4kT1Qw==\u002F6619515197025592278.png\">, 若\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002FATnQyz014O88b7h-HXKEYw==\u002F6619425037073291301.png\">,则该系统为( )",[47,48,49,50],"非线性时不变系统","非线性时变系统","线性时不变系统","线性时变系统",[],[],{"id":54,"source":5,"question":55,"options":56,"answer":61,"related":62,"type":20,"origin":21,"createTime":22},288996076,"关于时不变系统,以下描述正确的是",[57,58,59,60],"系统响应仅与当前以及过去的激励有关","激励延迟,则响应也延迟同样的时间, 同时响应波形形状不变","线性系统才有可能是时不变的","必须满足分解性",[],[],{"id":64,"source":5,"question":65,"options":66,"answer":71,"related":72,"type":20,"origin":21,"createTime":22},288996078,"已知某线性非时变连续系统, 当其初始状态\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002Fss-fqNkZbbXyJ4ZcVZ0SvA==\u002F6631378927490398820.png\">时, 系统的零输入响应\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002F6UVombhuMgc5lOi_F6Y7Ww==\u002F6630344287049497639.png\">,\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002FcyenSRlB6DToxitEngdarw==\u002F1605533267257716153.png\">. 若在初始状态\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002F9WAnHzbPGJP_a8zmn3cqMw==\u002F6630690633212751418.png\">以及输入激励 x(t)共同作用下产生的系统完全响应 \u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002F5DNZ_bnDv_fOAsnOVhDSrQ==\u002F6630391566049496448.png\">,\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002FcyenSRlB6DToxitEngdarw==\u002F1605533267257716153.png\">, 则系统在初始状态\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002F9WAnHzbPGJP_a8zmn3cqMw==\u002F6630690633212751418.png\">以及 输入激励为\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002Fd2hDteGtQ1EQImpnEZvHwA==\u002F6630660946398808807.png\">共同作用下 产生的系统完全响应\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002Fu1200zL8FTatBkVTwEiunw==\u002F6630202450049517182.png\">( )",[67,68,69,70],"\u003Cimg 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src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002Fb873e951e2c243ff89847ac050283941.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F0d6caf579c65148d319bc0aa85f1d352.png\">","\u003Cimg src=\"https:\u002F\u002Fp.ananas.chaoxing.com\u002Fstar3\u002Forigin\u002F47de60cb30c51724ccb575ec23654d92.png\">",[],[],{"id":84,"source":5,"question":85,"options":86,"answer":91,"related":92,"type":20,"origin":21,"createTime":22},288996082,"满足傅氏级数收敛条件时,周期信号f(t)的平均功率( )",[87,88,89,90],"大于各谐波分量平均功率之和","不等于各谐波分量平均功率之和","小于各谐波分量平均功率之和","等于各谐波分量平均功率之和",[],[],{"id":94,"source":5,"question":95,"options":96,"answer":101,"related":102,"type":20,"origin":21,"createTime":22},288996084,"双边指数信号\u003Cimg src=\"https:\u002F\u002Fimg-ph-mirror.nosdn.127.net\u002FVlcdx_cu3MkPij2rJy_TUA==\u002F3882102878893962230.png\">的 傅里叶变换为( )",[97,98,99,100],"\u003Cimg 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