机电一体化总体设计是应用（）技术，从整体目标出发，综合分析产品的性能要求，实现机电一体化产品整体优化设计的过程。

数控机床中的计算机属于机电一体化系统的控制系统，而电机和主轴箱则属于系统的驱动部分。

(  )1、机电一体化系统设计中,机电产品必须完成相互协调的若干机械运动,每个机械运动可由单独的控制电机、传动件和执行机构组成的若干系统来完成,由计算机来协调与控制。

输出继电器（OR）通过一对（）触点将PLC的控制信号传递给负载。

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。

Demand curve（or demand schedule） 需求曲线（或需求表）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。