第一章 单元测试

1、 问题:What’s the purpose of school, according to the boy’s father? ( )
选项:
A:It is a place that makes useful men out of boys.
B:It is a place for students to learn knowledge.
C:It is a place for us to make friends.
D:It is a place for us to learn skills.
答案: 【
It is a place that makes useful men out of boys.
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第一章 单元测试

1、 问题:

离散信号x[k]={1,1,1;k=0,1,2}和h[k]={2,3,2; k=-1,0,1}进行卷积运算后,得到y[k]=x[k]*h[k],其中y[k]为( )。

选项:
A:{2,5,6,5,2; k=-1,0,1,2,3}
B:{2,5,7,4,2; k=-1,0,1,2,3}
C:{2,5,7,5,2; k=-1,0,1,2,3}
D:{3,5,7,5,2; k=-1,0,1,2,3}
答案: 【
{2,5,7,5,2; k=-1,0,1,2,3}
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