凡从事水运工程试验检测的人员，均须按照《公路、水运工程试验检测人员资质管理暂行办法》的要求参加和资格考试。

在公路水运工程试验检测业务考试中，（）不是公路试验检测工程师和实验员考试的专业科目。

《等级证书》其满后拟继续开展公路水运工程试验检测业务的，检测机构应提前（）向原发证机构提出换证申请。

抗压强度比是以（）与（）同龄期抗压强度之比表示。

比值比（OR）

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。