国家开放大学奖学金的奖励对象是（）。

国家开放大学奖学金的奖励对象是（）

DNA螺旋结构的特点之一是

DNA双螺旋结构的特点之一是

简述DNA双螺旋结构及其特点。

简述DNA双螺旋结构的基本特点。

关于DNA双螺旋结构特点，叙述正确的是（）。

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.

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。