系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。

矿井通风系统是指矿井通风方式、通风方法、通风网络的总称。

Shutdown price（or point，or rule） 停业价格（或停业点、停业原则）

翻译：With Average or With Particular Average（WA or WPA）（）

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。

一通三防“一通”是指矿井通风，“三防”是指防治瓦斯、防治煤尘、防灭火。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。