logo - 刷刷题
下载APP
【单选题】

A.A
B.B
C.C
D.D

A.
下列各式中r(t)是输入信号,c(t)是输出信号。判断哪个系统是非线性时变系统()。
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】What does the man ask the woman to do() A. Travel on business. B. Fly to New York. C. Prepare some documents. D. Have a holiday.

A.
W: Mr. Smith, this is the ticket for your flight to New York.
B.
M: Thank you. Please get all my documents ready for the trip.