科举制度的基本情况（如什么叫科举制度？产生于何时？唐代科举考试最主要科目是什么？

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.

什么叫活性污泥？化工废水最常用的生物处理方法是什么？这种方法主要处理化工废水中的什么污染物？为什么这种处理方法对化工废水中的这种污染物有很强的处理效果？这种处理方法在废水处理中起主要作用的是什么？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

化工生产过程设备中什么叫塔？

对于正弦脉冲宽度调制（SPWM），什么是调制信号？什么是载波信号？何谓调制比？

什么叫频率调制？一般用什么方法解调调频波？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。