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The overall impulse response of the D-T LTI system shown below h[k] = ().![The overall impulse response of the D-T LTI system](http://static.jiandati.com/64d6c1e-chaoxing2016-43641.png)
A.
B.
C.
D.
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_q_ckda.png)
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_panel_vip.png)
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_q_wyda.png)
- · 有5位网友选择 B,占比62.5%
- · 有2位网友选择 A,占比25%
- · 有1位网友选择 C,占比12.5%
A.
B.
C.
D.
A、providing farm lands
B、conserving water sources
C、maintaining soil
D、reducing droughts and floods
A、Non-causal and stable
B、Causal and unstable
C、Non-causal and unstable
D、Cause and stable
The impulse response of a D-T LTI system isthe input sequence is
. then zero-state response of the system
at
is ( ).
A、2
B、3
C、4
D、5
A、Cosine components for all harmonics
B、Sine components for all harmonics
C、Sine components for odd harmonics
D、Cosine components for odd harmonics
Given the spectrumof a continuous-time signal is shown below, then, the periodic signal signal
A、
B、
C、
D、
For a periodic signalshown below, the DC component is
A、0
B、2
C、2.5
D、4
A、continuous and non-periodic
B、continuous and periodic
C、discrete and non-periodic
D、discrete and perodic
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