（）, 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 （）.

论述中国梦的科学内涵以及实现途径？结合本身实际谈谈要实现中国梦当代大学生需要做好哪些准备？

举行新闻发布会需要做好会前准备工作，而做好这项工作的首要条件是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

以下哪些情况会造成提示“Incorrect number or IP address”？（）

在开展变更地籍调查工作之前，要做好资料的准备工作，主要包括（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。