皮皮学，免费搜题
登录
搜题
【多选题】
关于频率特性说法正确的是A.
将系统传递函数中的s换成jw就得到了系统色频率特性函数
B.
频率特性函数的模即为幅频特性
C.
频率特性函数的角即为特性
D.
幅频特性为频率的偶函数,特性为频率的奇函数
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
【单选题】arms aloft and fists clenched ... Did the writer (a) wrap her arms around her body, or (b) lift her arms above her head?
A.
wrap her arms around her body
B.
lift her arms above her head?
【简答题】很多儿童搭公交车去学校。 Many kids _____ the bus to school. Many kids ____ to school ___ bus.
【单选题】What do we learn about Rainbow Fish?
A.
It is of political significance.
B.
It is a commercial venture.
C.
It is sure to conquer the final frontier.
D.
It is the world's third sub to reach a depth of 4000m.
【简答题】The arms deals include T-90 _______, Sukhoi ____________, and the acquisition of a Russian _____________________ for the Indian Navy.
【单选题】What do we learn about the new regulations?
A.
They will not be welcomed by young people.
B.
They will help to popularize early marriage.
C.
They will boost China's economic growth.
D.
They will not come into immediate effect.
【单选题】What do we learn about the man ?
A.
[A]He quitted his job.
B.
[B]He has got two job offer s .
C.
[C]He is doing a part-time job.
【单选题】What do we learn about Mayor Megan Barry?
A.
She knows the real goal of education.
B.
She is a mayor of insight and vision.
C.
She has once run a pre-K program.
D.
She is a firm supporter of pre-K.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
