常用布尔算符有：and、or、not等，当采用同义词进行检索时应当选用的算符是？

一般抹灰工程分为普通抹灰、中级抹灰和高级抹灰，当设计无具体要求时，可以按普通抹灰进行验收。（）

对于普通啤酒而言，当发酵度达到（）时，全部高级醇已基本形成。

自然科学的四大门类即基础科学、农业科学、工程科学和医学科学。

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。

高级抹灰与普通抹灰的区别是在普通抹灰的基础上还应该（）