简答题：幼儿社会活动目标的原则有哪些？

简答题：网络信息检索的技巧有哪些？

简答题：我国报刊发行的主要渠道有哪些？

简答题：图书报刊资料检索的方法有哪些？

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。

（简答题）简述一下影响经济发展的因素主要有哪些？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。