礼貌是人与人在社会交往中相互表示敬意和友好的行为规范，它反映一个人的人际交往和待人接物的诚意。

人们交往时，相互表示敬意而举行的隆重仪式叫做（）。

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（）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

人是社会的动物，社会是人与人相互作用的产物。

在社会活动中，人们运用语言符号系统或非语言符号系统相互之间交流信息、沟通情感的过程就是人际交往。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。