在下述机电一体化对机械系统的基本要求中，哪个是首要要求？（）

机电一体化设计中，“增强机械系统”的设计思想是什么？

机电一体化系统基本上由机械系统、（）五个子系统组成。

在数控系统中，复杂连续轨迹通常采用（　　）方法实现。

在数控系统中，复杂连续轨迹通常采用（　　　）方法实现。

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。