过定位在机械加工中是不允许的。( )

电解加工是利用什么原理使工件加工成型的？电铸加工是基于什么原理？

加工原理误差是由于采用了近似的刀刃轮廓和近似的（）进行加工所产生的误差。

加工原理误差是指由于采用了近似的（）或近似的（）进行加工所产生的误差。

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.

原理误差所引起的加工误差属于（）

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。