（）, 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 （）.

课程设计活动史上，结构主义课程设计的代表人物是（）。

课程设计活动史上，结构主义课程设计的代表人物主要以（）为代表。

汉代的四神瓦当分别是（）、（）、（）、（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

中外历史学发展历程大致经历了（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。