（）, 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。

Demand curve（or demand schedule） 需求曲线（或需求表）

从马克思主义的创造者、继承者的认识成果讲，它是由马克思和恩格斯创立的，而由其后各个时代、各个民族的马克思主义者不断丰富和发展的观点和学说的体系。（）

被马克思称为“第一个人权宣言”、“推动了欧洲革命”的资产阶级革命重要文献是（）。

马克思的相对过剩人口理论认为，相对过剩人口的存在形式有（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。