见面课:LTI系统的模拟框图和信号流图表示。

不属于离散时间系统模拟框图的基本运算单元为( )。积分器

已知离散系统的模拟框图,则系统函数为( )。![第二题.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/202003/84e25187253440bdbb123a6148d9c3b4.png)![2.1.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/202003/0b42afdc121f40588535df656e57edab.png)

已知连续时间系统的系统函数为![第三题.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/202003/f321ae4ef67e468f8460bc51465e5aeb.png),则系统的模拟框图可以表示为( )。![3.1.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/202003/c6f5184446074a7c9ed19bdeb74d9332.png);![3.2.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/202003/9c4bfd9c84e642b7a72f2b22084b62b5.png);![3.3.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/202003/74d6a849a9f846f8b0d1a39681b95156.png)

已知离散时间系统的信号流图,则下列说法正确为( )。![第四题.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/202003/3cbadca4447a481fad429b78228e9824.png)![4.1.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/202003/9ad9acf87b2143e28779e07e106d8a37.png);该系统为一阶系统

如图所示的连续系统的系统函数为。![第五题-2.png](https://image.zhihuishu.com/zhs/onlineexam/ueditor/202003/e4fbdba1033a40dc80bd99297d07e533.png)( )

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