（）, 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 （）.

力是越大打击效果：（）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

安全边际量与安全边际率都是越小越好，危险率则是越大越好。

路拱是为了迅速排除降落至路面上的水而设置的，因此路拱坡度是越大越好。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

con拉控制应力的确定是越大越好。