公文的主题词由（）组成。

从公文中概括出能展示公文基本内容的一组提炼名词或名词词组，这就是主题词，目的是为了（ ）。

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。

收到下级机关上报的需要办理的公文，文秘部门应当进行审核。审核的重点包括（）

公文中主题词的作用是：（）

一份公文的主题词可以为（ ）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。