公共关系专题活动的特点表现在（）

公共关系专题活动的基本要求包括（）

公共关系专题活动具有主题明确、对象明确、精心策划的特征 。

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。

重大突发公共卫生事件的专题风险评估组织部门是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

专题学习网站的类型：资源型的专题学习网站、（）、课堂互动型专题学习网站。