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。

蒙古族的三大历史名著有（）、《蒙古黄金史》、《蒙古源流》。

蒙古族的三大历史著作是[蒙古秘史]、[蒙古源流]、[（）]。

汉代士大夫阶层的作用是什么？

宋代院体画和士大夫画有什么不同？请分析士大夫画的艺术主张及创作特色？

为什么说梁启超是中国史学史的奠基人？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。