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

所谓（）即黏度随温度变化的程度。黏度随温度变化越小，黏温性越好，整体液压系统工作越稳定，受温度变化的影响越小。

正铲挖掘机的工作特点是什么？反铲挖掘机的工作特点是什么？

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。

挖掘机作业时，明确专人指挥的目的是什么？

挖掘机装载时，铲斗可以从汽车司机室上方通过。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。