已知系统的单位阶跃响应为xou(t)=1+0.2e-60t-1.2e-10t,试求:
第2题
What did he actually do when he walked back to the table?
He explained to the waiter what ______.
第3题
A、the restaurant is not very full
B、he is upset by the head waiter’s treatment of him
C、the head waiter brings him a drink
D、he is given a table that is not comfortable
第5题
第8题
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