在排水通气管系统中，通气支管有环形通气管和（）管两类。

下列哪一个情况排水系统应设环形通气管？（  ）

下列排水系统应设置环形通气管的是（）。

根据《建筑给水排水设计规范》，下列情况下应设置环形通气管的是（）。

排水系统的通气管系设置的作用？有哪些不同类型的通气管？各通气管的设置条件？

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。