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单选题 描述一个二阶LTI连续系统的微分方程为
.该微分方程的特征方程是
A. 
B. 
C. 
D. 
学科：信号处理与系统
时间：2025-10-27 06:04:08
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题目1单选题
两个LTI系统并联,其总系统的冲激响应等于A. 两个子系统冲激响应的卷积B. 两个子系统冲激响应的乘积C. 两个子系统冲激响应的相加D. 两个子系统冲激响应的微分
题目2单选题
系统的自由响应模式取决于A. 系统的特解B. 系统微分方程的特征根C. 系统的初始状态D. 输入信号的形式
题目3单选题
初始状态 <img src="https://tihai-oss-cloud.itihey.com/img/6d42eb788ddd5307c8cc248e2ab11046.png"> 和初始值 <img src="https://tihai-oss-cloud.itihey.com/img/a2af277f3f45c02aa7d9773363e8b744.png"> 的区别在于A. <img src="https://tihai-oss-cloud.itihey.com/img/6d42eb788ddd5307c8cc248e2ab11046.png">是输入接入前的状态,<img src="https://tihai-oss-cloud.itihey.com/img/a2af277f3f45c02aa7d9773363e8b744.png"> 是输入接入后的状态B. 它们总是相等的C. 它们总是无关的D. <img src="https://tihai-oss-cloud.itihey.com/img/6d42eb788ddd5307c8cc248e2ab11046.png">是输入接入后的状态,<img src="https://tihai-oss-cloud.itihey.com/img/a2af277f3f45c02aa7d9773363e8b744.png"> 是输入接入前的状态
题目4单选题
系统冲激响应<img src="https://tihai-oss-cloud.itihey.com/img/946e2e336d762ff6a259f038021e6c5a.png"> 的什么特性直接决定了系统的因果性A. <img src="https://tihai-oss-cloud.itihey.com/img/946e2e336d762ff6a259f038021e6c5a.png">在<img src="https://tihai-oss-cloud.itihey.com/img/1aa12e3a373a059a4b1b27f18f883507.png">时的值B. <img src="https://tihai-oss-cloud.itihey.com/img/946e2e336d762ff6a259f038021e6c5a.png">的积分C. <img src="https://tihai-oss-cloud.itihey.com/img/946e2e336d762ff6a259f038021e6c5a.png">的微分D. <img src="https://tihai-oss-cloud.itihey.com/img/946e2e336d762ff6a259f038021e6c5a.png">的幅度
题目5单选题
一个LTI系统的冲激响应为 <img src="https://tihai-oss-cloud.itihey.com/img/9c1261f0d14301606056105e99c8d4ad.png">,则该系统是一个A. 微分器B. 放大器C. 延时器D. 积分器
题目6单选题
若某微分方程的特征根为 <img src="https://tihai-oss-cloud.itihey.com/img/947ff9ac765aeb9075234a267a52b6af.png">,则其零输入响应<img src="https://tihai-oss-cloud.itihey.com/img/91fef41dc574e34e1e8682abbdeab919.png">的一般形式为A. <img src="https://tihai-oss-cloud.itihey.com/img/01e863871e023d53d314075f02fddfbb.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/6a63f7618355a23d08345854300ee378.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/b4b980115785123040bdab45d1d7c078.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/d17e00cce05abc3cb5b7516963d27fda.png">
题目7单选题
若一个LTI系统的阶跃响应为 <img src="https://tihai-oss-cloud.itihey.com/img/47e760c09f3789f6b4570e1ddc60ec31.png">,则其冲激响应 <img src="https://tihai-oss-cloud.itihey.com/img/946e2e336d762ff6a259f038021e6c5a.png"> 为A. <img src="https://tihai-oss-cloud.itihey.com/img/a668bd24d9d89e36653f0c1bf54e9441.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/1418caa4def3f3181c14f249c2db6faf.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/849a2001646a9e116b7a4194619c3316.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/6039f010256fbc3f9fae55e8c661ae7d.png">
题目8单选题
信号<img src="https://tihai-oss-cloud.itihey.com/img/a1d227ac60bfafdb0172f3f1f0d49fc6.png">与单位冲激信号 <img src="https://tihai-oss-cloud.itihey.com/img/e4fad7024d28c32ae4e9ceb87f76aa07.png"> 卷积,结果是A. <img src="https://tihai-oss-cloud.itihey.com/img/a1d227ac60bfafdb0172f3f1f0d49fc6.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/e4fad7024d28c32ae4e9ceb87f76aa07.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/804052fcfff16a9f377f53b7aa8337cc.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/599ae4b6c73eaa7204a038e65a04ca25.png">
题目9单选题
一个系统的输入为<img src="https://tihai-oss-cloud.itihey.com/img/c5a605d2c554d3508cb06b1e16fb0c01.png">,输出为 <img src="https://tihai-oss-cloud.itihey.com/img/a1cae6c1c4c078d78997da004682109e.png">,则该系统的冲激响应 <img src="https://tihai-oss-cloud.itihey.com/img/946e2e336d762ff6a259f038021e6c5a.png"> 为A. <img src="https://tihai-oss-cloud.itihey.com/img/e384987338d4cb08b4018ebc0120719b.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/4ea59f34ff9b10d7712103fe1b847081.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/e4fad7024d28c32ae4e9ceb87f76aa07.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/6316a2ea8cd1b395a138845c153c096f.png">
题目10单选题
描述一个二阶LTI连续系统的微分方程为<img src="https://tihai-oss-cloud.itihey.com/img/848b72acb9aacb4bcda47b327e88b731.png">.该微分方程的特征方程是A. <img src="https://tihai-oss-cloud.itihey.com/img/d63281a6e9b7e4f2a06c50d96edffdff.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/b7595c103d4ca75bed452a4c5090e72d.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/4da693ae0d038f4f8bdcbbf9ad587c35.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/6bb411111b33e31c7ab7d876ceac1929.png">
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