简述布尔算符（OR）的作用。

政府失效政府对人的本质和行为的基本假设是（）。

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。

行政管理权是政府的基本职责，即代表国家管理各种公共事务，行使行政管理权。其主要包括（）。

简述政府失效理论的基本观点及政府失效的几点表现。

政府失效理论是用（）观点来分析和说明市场经济条件下政府干预的局限和失败问题。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。