（）, 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。

建设工程组织流水施工时，相邻专业工作队之间的流水步距不尽相等，但专业工作队数等于施工过程数的流水施工方式是（）。

建设工程组织流水施工时，相邻专业工作队之间的流水步距相等，且施工段之间没有空闲时间的是（）。

流水步距是指组织流水施工时，前后两个相邻的施工过程（或专业工作队）先后开工的时间间隔。

流水步距指组织流水施工时，相邻两个专业工作队相继开始施工的最小时间间隔。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。