皮皮学,免费搜题
登录
搜题
【简答题】
已知某连续时间 LTI系统满足微分方程 试求该系统的系统函数 和单位冲激响应 。
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】西式宴会中,咖啡杯分大号、中号、小号,按( )来选用。
A.
不同年龄
B.
不同性别
C.
不同用餐时间
D.
客人不同层次
【单选题】西式宴会中,咖啡杯分大号、中号、小号,按( )来选用。
A.
客人不同层次
B.
不同年龄
C.
不同性别
D.
不同爱好
【简答题】Once when I was a ager, my father and I were standing in line to buy tickets for the circus. Finally, there was only one family between the ticket office and us. This family made a big impression ...
【单选题】When they had finished playing, the children were made to ______ all the toys that they had taken out.
A.
put off
B.
put out
C.
put up
D.
put away
【简答题】During the twentieth century there has been a great change in the lives of women. Awoman marrying at the end of the nineth century would probably have been inher middle twenties. She might have se...
【简答题】Once when I was a ager, my father and I were standing in line to buy tickets for the circus. Finally, there was only one family between the ticket office and us. This family made a big impression ...
【单选题】The following is an abstract, consisting of 5 sentences. Which key element does Sentence ②describe?Abstract: ①Anxiety about tests and test-like situations was examined in a series of studies of elemen...
A.
the key results or findings
B.
background information
C.
the methods
D.
the main conclusion
【简答题】如果调制信号 m(t) 没有( ),则输出信号中没有载频分量
【简答题】A.The average life span was less than 50 years. B.It was very common for them to have 12 children. C.They retired from work much earlier than today. D.They were quite optimistic about their future.
【单选题】The children______________many times not to get closed to the fire.
A.
were being told
B.
have been told
C.
had been told
D.
told
相关题目: