（）, 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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

根据症状和体征提示有胸腔积液时，需确定是否有胸腔积液应首选的检查是（）

根据症状和体征提示有胸腔积液时，确定是否有胸腔积液应首选的检查是（）

根据症状和体征提示有胸腔积液时，确定是否有胸腔积液应首选的检查是

根据症状和体征提示有胸腔积液时，需确定是否有胸腔积液，应首选的检查是

根据症状和体征提示有胸腔积液时，需确定是否有胸腔积液时首选的检查是

中等量胸腔积液，出现压迫症状，需要抽液时一次抽液量为( )

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。