（）, 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 （）.

斯坦福大学的创业教育开始于（）年。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

一般而言，碗出现足开始于（）

关于俄国近代史史学界一般都主张其开始于（）。

运用国家的力量编辑大学教材，我国近代开始于（）年。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。