（）, 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.

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 （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

从市场营销学的角度来理解，市场是指买卖之间商品交换关系的总和。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

从市场营销学的角度来理解，市场是指（）。

从市场营销学的角度来理解，市场是指（）。

布尔逻辑具体检索时，是通过三个布尔运算符来实现其功能的：AND、OR、（）。