（）, 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。

按房屋建筑的结构分，可划分为（）、（）、（）钢结构的房屋建筑。

房屋按建筑结构类型和材料可分为砖木结构、混合结构、( )。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

房屋建筑按使用功能分为工业建筑、民用建筑和（）。

房屋建筑按使用功能分为工业建筑、民用建筑和（）。