现行水利水电工程建安工程造价采用单价法计算，单价法的主要优点有（）

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.

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.

某堤防工程发生质量问题后，以下()处理方式是符合《堤防工程施工质量评定与验收规程(试行)》SL239-1999的。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

按水利工程计价规范，疏浚和吹填工程的船舶疏浚工程的主要工作内容是（）。

《堤防和疏浚工程施工合同条件》包括（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。