简述布尔算符（OR）的作用。

简述机电一体化对机械系统的基本要求及机械系统的组成。

OR指令的作用是: 。( )

货币市场的参与者由机构参与者和专业人员组成。专业人员主要包括（）。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

生产经营单位的安全生产管理机构是专门负责（）的内设机构，其工作人员是安全生产专业管理人员。

由四根杆状构件组成的平面四杆机械机构简称四杆机构。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

简述电力机车总体的组成及各部分的作用。