刚性防水屋面的结构层宜为（）。

（）shall be liable for loss of and damage to the Vessel and／or goods arising or resulting from inaccuracies in stating the description，quantity，weight，measurement or contents.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, 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。

"根据《钢结构工程施工质量验收规范》，钢结构工程施工单位应具备相应的钢结构工程施工（），施工现场质量管理应有相应的施工技术标准、质量管理体系、质量控制及检验制度、施工现场应有经（）审批的施工组织设计、施工方案等技术文件。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。