采用大型机械挖掘土石方时，应对机械的（）的方法与挖土分层深度等制定施工方案。

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

常用布尔算符有：and、or、not等，当采用同义词进行检索时应当选用的算符是？

由机械开挖土方时，基槽应分段、分层开挖，合理确定开挖顺序、路线及开挖深度。

沟槽深度表中未包括的管道沟槽深度应如何确定？

可以在（）阶段采用Make-or-buy决策分析。

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。

采用机械挖槽时，沟槽分层的深度应按（ ）确定。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。