（）, 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 （）.

法律婚姻是指通过法律规定程序结婚的婚姻，作为法律婚姻的对称，事实婚姻是指符合结婚实质要件的男女，未办结婚登记手续而以夫妻名义同居生活，在事实上、客观上形成婚姻关系。区别法律婚姻和事实婚姻的首要标志是（）

涉外婚姻，在狭义上，专指（）在中国按照中国法律结婚、离婚或复婚。婚姻家庭法学中的涉外婚姻，通常指的是狭义的涉外婚姻。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

在对偶婚制下的婚姻是以（ ）。

作为一种婚姻形态，对偶婚是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。