在开业仪式现场，接待贵宾应由单位（）亲自负责。

举行开业仪式时赠予来宾的礼品，应具有如下特征（）

在开业仪式的现场，接待贵宾须由单位的礼仪人员亲自负责。

在举行开业仪式的现场，一定要有专人负责来宾的接待服务。

在一般情况下，在各式各样的开业仪式中，（）都是一项极其重要的、不可或缺的程序。在这个仪式中，最为活跃的是（）。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。