文献资源的（）是图书馆信息服务工作的重要支柱。

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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

（）are liable to be stoten, pilfered or may damaged due to improper handing or stowage.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

学科构成是信息资源结构最基本的要素。我国图书馆界认为，应以我国多数图书情报机构采用的为基础，参照国务院学位委员会公布的学科、专业目录和国外学科划分的一些标准，拟定300-500个学科、专题，作为我国图书馆确定信息资源学科结构的依据。（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。