一个复杂的高阶系统总是可以看成是由若干个零阶、一阶和二阶系统串联而成的。

一个复杂的高阶系统总是可以看成是由若干个零阶、一阶和二阶系统并联而成的。

一般对于闭环控制系统来说，控制器对系统输出的作用是（）.

（）是一种图解分析法，适用于具有严重非线性特性的一阶、二阶系统。

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.

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。