车削细长轴工件时，为了减少工件变形，应尽量增加校直次数。

在车床上加工细长轴时，为减小因工件变形产生的加工误差常采用（）工艺装置。

细长轴车削完毕，必须（）以防变形。

加工细长轴时，防止弯曲变形的方法有（）

防止车削细长轴出现弯曲变形的方法有（）种。

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。

车削细长轴时，为了提高工艺系统刚度，主要措施为（）。

车削细长轴时，切削力中三个分力以（）对工件的弯曲变形影响最大。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。