题目内容

1. My sister was fond of reading _____________.

A. stories of children
B. childrens’ stories
C. children stories
D. children’s stories

查看答案

搜索结果不匹配？点我反馈

更多问题

1. I went to the teacher for ____________ about my study.

A. an advice
B. advice

用N点长矩形窗所设计的FIR滤波器的正肩峰位置为

A. ω=ωc - 2π/N
B. ω=ωc +2π/N

长度为N的汉明窗的窗谱主瓣宽度为

A.2π/N
B. 4π/N
C. 6π/N
D. 8π/N

第二类线性相位FIR滤波器的幅度函数 Hr(ω) 关于以下哪些点是偶对称的？

A. ω=0
B. ω=π
C. ω=1.5π
D. ω=2π