（）, 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。

Demand curve（or demand schedule） 需求曲线（或需求表）

把失败归因为自己的努力不够，属于什么归因（）

成败归因理论认为，学生常将成功或失败归因于四个方面：能力、努力、运气、任务难度。(心理学)

失败后仍会使个体对以后类似活动的成功期望不至于过低，会继续努力有助于保持乐观的情绪，这种归因是把失败归因于（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。