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 （）.

The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.

（）are liable to be stoten, pilfered or may damaged due to improper handing or stowage.

Banks have no liability for any delay or loss caused by postal or telex failure.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

我国工程勘察和工程设计资格分为甲、乙、丙、丁四级，允许低资质单位承接高等级工程的勘察和设计任务。

防雷工程专业设计或者施工资质分为甲、乙、丙三级，丙级资质由（）气象主管机构认定。

甲.乙.丙三个工程施工单位组成联合体进行投标，甲单位为一级资质，乙单位为二级资质.丙单位为三级资质，则联合体的资质等级应为（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。