大多数鱼类都是洄游性鱼类。（）

现生鱼类绝大部分属硬骨鱼类。

软骨鱼类与硬骨鱼类均有棱肌。（）

海洋硬骨鱼的祖先生活在（）

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

借用生物学中“分类学”概念，在教育领域建立了“教育目标分类学”的著名教育家是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

为什么说软骨鱼比硬骨鱼原始？