已知系统的脉冲响应函数，则测量系统对任意输入时的响应是什么？

已知线性系统的输入xі（t），输出x0（t），传递函数G（s），则它们之间的关系是（）

已知单位负反馈闭环控制系统的单位阶跃响应的稳态误差为0.1，试问该系统为几型系统，系统的开环放大系数为多少？

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

已知系统的单位阶跃响应为c（t）=1-1.8e -4t+0.8e -9t，t≥0；试求系统幅频特性和相频特性。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

华北水利水电大学（花园校区）位于（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。