输出继电器（OR）通过一对（）触点将PLC的控制信号传递给负载。

在VMI库存控制策略下，允许（）的库存策略、订货策略进行计划和管理

比较推理机的控制策略。

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.

请简述推理机的概念及作用。

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。

产生式系统中，推理机的推理方式有哪几种？在产生式推理过程中，如果发生策略冲突，如何解决？