什么是以经济建设为中心？为什么要坚持以经济建设为中心？

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。

经济学的三个经济基本问题：生产什么、如何生产、如何分配。

说明企业责任中心如何确立？企业责任中心的制度设计包括哪些方面？概括说明企业责任中心的制度实施要点。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

真菌的分类单元如何？最基本的分类单元是什么？

真菌的分类单元如何？基本分类单元是什么？