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.

简述公文写作注意事项中的引用标准。

简述行政答辩状的写作注意事项。

简述写作函的注意事项。

简述合同的写作注意事项。

简述写作批复的注意事项。

简述写作通报的注意事项？

简述写作意见的注意事项。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。