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。

马克思恩格斯创立科学社会主义学说的时候，是以高度社会化的资本主义大生产作为社会主义革命的物质前提的。但是，革命的实践超越了马克思恩格斯当年的预期，社会主义革命并不是在生产社会化程度最高的资本主义国家首先实现，而是在经济文化相对落后的俄国、中国以及其他国家相继取得了胜利。社会主义首先在经济文化相对落后的国家取得胜利的主要原因（）

社会主义首先在经济文化相对落后的国家取得胜利的原因是什么？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。