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。

输出继电器（OR）通过一对（）触点将PLC的控制信号传递给负载。

（）是指普调考、技能竞赛、新员工结业考试或技能竞赛等规模较大的考试考核活动。

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。

磨板机制模板时，镜架是通过（）点来固定的。

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。

镜架颜色的选择有固定的规则。

布尔逻辑具体检索时，是通过三个布尔运算符来实现其功能的：AND、OR、（）。