乙级工程造价咨询企业的技术负责人要取得造价工程师证书，并具有工程或工程经济类高级专业技术职称，其从事工程造价专业工作（）年以上。

Q235-AF

Q235-AF的含义为（）。

钢的牌号Q235-AF中A表示质量等级为（）级。

Q235－AF中Q235代表的含义是屈服点数值为235MPA。

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。