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 （）.

（）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。

马斯洛认为人具有七种基本需要，属于生长需要的是（）。

马斯洛的需要层次理论把人的需要从低到高分为五个层次，人们需要感情的交流，需要建立良好的人际关系，这种需要属于马斯洛需要层次中的哪一类需要？（）

简述公共关系具有代表性的七种定义？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。