若原厂房控制点不存在时，恢复厂房控制网应以原有（）为依据

焊工操作技能考试时，垂直固定的管状试件考试合格后，可免考( )板状试件。但板状试件考试合格不能免考垂直固定管状试件。

（）指的是考试的有效性，即考试分数能够代表所要测量的内容的程度或达到考试目的程度。

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。

职业技能鉴定每一项实操考试点下试题数量不小于4道。

鉴定考试时，考生须凭准考证和（）方可进入考场。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。