高炉炉渣中含有一定数量的氧化镁，能提高炉渣的流动性和（）。

工业园区内的绿化能够净化空气、防尘、防噪音，起到改善工业园区内部小气候的保护作用。

能够改善混凝土拌合物流动性的外加剂是（）。

（）是指普调考、技能竞赛、新员工结业考试或技能竞赛等规模较大的考试考核活动。

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。

参加中级鉴定的人员必须是取得初级技能证书并连续工作（）年以上、或是经劳动行政部门审定的以中级技能为培养目标的技工学校以及其他学校毕业生。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。