为什么会出现彼德现象如何防止彼德现象的出现?

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。

为了防止“流涎”现象，喷嘴可采用哪几种形式，描述每种形式的工作原理。

何谓制冷系统的有害过热，如何防止？

离析现象对混凝土质量有何影响？如何防止？

如何防止和消除油膜振荡现象？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。