（）, 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（）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

怎样输电才更有效率，更合算？

仓储（）的基本功能决定了仓储的基本任务是存储保管、存期控制、数量管理和质量维护。

仓储按存储的方式有（）仓储、（）仓储和自动化仓储系统等。

短期存储时，自有仓储更合算。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

仓储管理是对货物存储的经营管理，是服务于一切库存商品的（）。