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 （）.

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。

（）是建立在教学理论、视听理论和技术基础上，利用现代化教学技术手段培训师范生和在职教师教学技能的系统方法，它实际上提供了一个缩小了的、可控制的教学练习环境，使日常复杂的课堂教学得以精简，并能使练习者获得大量的反馈意见，使准备成为或已经成为教师的人有可能集中掌握某一特定的教学技能和教学内容。

作为一名师范生或在职教师除了应具备各种教学技能外，还应具备较高的对（）、（），只有这样才具备了进一步提高教学技能和研究教学艺术的条件。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。