（）, 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 （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

简述社会系统学派的理论特点。

现代管理理论中，社会系统学派的创始人是（）

决策管理学派是在社会系统学派的基础上发展起来的，以下选项哪个不属于其主要观点是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

社会系统学派的创始人是美国高级管理人员和管理学家（）