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.

影响问题解决的心理因素：问题解决受多种心理因素的影响。有些因素对问题解决的思维活动起促进作用，有些因素则妨碍思维活动对问题的解决。动机和情绪；知识和经验；原型启发；定势；功能固着；（）

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。

青少年心理行为问题的成因有：家庭不良影响、学校教育不当、社会环境复杂和（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。