★为防止或减少降水对周围环境的影响，常采取回灌技术，回灌井点与降水井点的距离不宜小于()m。

在降水施工中采用管井井点的条件是（ ）。

采用回灌井点时，回灌井点与降水井点的距离不宜小于（）In。

面积较大得基坑采用轻型井点降水，井点布置宜采用双排布置。（）

可以在（）阶段采用Make-or-buy决策分析。

为了防止流砂现象的发生，在基坑开挖时可采用井点法降水。

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。

为了防止流砂现象的发生，在基坑开挖时可采用井点法降水。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。