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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

在解剖上，咽隐窝位于()

蝶筛隐窝位于哪个解剖部位后上方（）。

肋纵膈隐窝

肋膈隐窝 （ ）

肋膈隐窝( )

关于肋膈隐窝（）

关于肋膈隐窝的描述正确的是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。