下列选项中，不属于润滑油的三大类别之一的油品是（）。

简述布尔算符（OR）的作用。

选择润滑油时，应先选择油品（），再选择（），最后选（），决不可先后颠倒。

当发动机润滑油的温度过高，会造成润滑油压力偏低。

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。

以下哪些情况会造成提示“Incorrect number or IP address”？（）

油品储存周期：轻质燃料油（）个月，散装润滑油和润滑脂（）个月。

简述油品中含水会造成哪些不良后果？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。