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.

水体中的（）废水污染来自电镀、焦化、煤气、化肥和石油化工等排放的工业废水。

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”？（）

在水利水电工程地质勘察工作中，地下水长期观测的周期除一些特殊重要地段，如可能产生水库严重渗漏、严重浸没、坝基或坝肩严重渗漏等地段，需要较长观测时间，甚至延续到工程运行以后一段时间外，多数情况下地下水长期观测都规定观测期为（　　）。

下列关于向农田灌溉渠道排放工业废水和城市污水的说法，符合《水污染防治法》的是（）。

为避免污染，取水构筑物宜位于城镇和工业企业上游的清洁河段，在污水排放口的上游（）以上。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。