（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

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.

小儿容易发生脱水的原因是（）。

小儿腹泻易发生脱水的原因是

小儿腹泻易发生脱水的原因是（）。

小儿腹泻易发生脱水的原因是

小儿腹泻易发生脱水的原因是（ ）。

小儿容易发生脱水的原因是（）。

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。