发电厂、变电站的电气系统，按其作用分为（）和二次系统。

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.

发电机启动前电气专业试验项目？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

变电工程施工阶段质量管理中，需加强的电气专业质量控制的工程重点环节、工序包括哪些方面？

依据《电力安全工作规程（发电厂和变电站电气部分）》，发生人身触电时，应立即断开有关设备的（）

发电厂和变电所中装设的电气设备中二次设备是对一次设备进行测量、控制、监视和保护，有（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。