皮皮学，免费搜题
登录
搜题
【单选题】
若 x(n) 为实序列, X(e jω ) 是其傅立叶变换,则( )A.
X(e jω ) 的幅度和幅角都是 ω 的偶函数
B.
X(e j ω ) 的幅度是ω的奇函数，幅角是ω的偶函数
C.
X(e j ω ) 的幅度是ω的偶函数，幅角是ω的奇函数
D.
X(e j ω ) 的幅度和幅角都是ω的奇函数
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】网络RTK主要组成部分?
【简答题】Listen to a woman describing her plan for a dream journey and fill in the blanks Destination We would like to go to Easter Island . It is very 1)____,very 2)____ from other places. Means of transporta...
【单选题】太极拳有哪几种流派 。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
陈氏、杨氏、吴氏
B.
陈氏、杨氏、武氏、孙氏、吴氏
C.
杨氏、武氏、孙氏
【简答题】According to the dictionary definition of “create”, ordinary people are creative every day. To create means “to bring into being, to cause to exist”—something each of us does daily. We are creative wh...
【单选题】The reason why he rejected our plan is ______ he didn ’ t trust us.
A.
for
B.
because
C.
since
D.
that
【简答题】The
difficult part of realizing our dreams is that _______.A. we don’ t know how to plan B. dreams such as becoming Vice President in five years are impossible to fulfill C. our dreams are too big D. ...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
