撰写市场调查报告主题上应始终体现明确的调查()。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, 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。

社会调查研究总结阶段的工作主要包括（），（）和撰写调查报告。但许多社会调查研究并不专门进行前两项工作，而是与撰写调查报告合并进行，调查报告的完成，就是社会调查研究结束的主要标志。

某研究者进行了一项关于某厂机动车辆事故的调查研究，共调查了该厂发生事故的工人171例，未发生伤害事故的工人352例。计算了各种危险因素的OR值。发现路口的照度可影响事故的发生。该项研究属于

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。