中枢神经系统的基本单元是（）

副交感神经系统不具有下述哪一特点（）

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。

简述药物对神经系统毒性相关的神经系统结构和功能特点主要涉及那几方面？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

（）集监控、记录功能于一体，是系统的核心单元。

布尔逻辑具体检索时，是通过三个布尔运算符来实现其功能的：AND、OR、（）。