（）, 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。

如何理解科学技术是第一生产力？

如何做到科学对待人生环境？

如何做到决策的科学性？

（）代女纺织人物黄道婆对棉织生产技术全过程的改革，大大提高了棉纺织的生产效率。

“黄婆婆，黄婆婆，教我纱，教我布，两只筒子两匹布”，是歌颂（）在家乡推广、传授棉纺织技术的歌谣。她是中国棉纺织业的先祖，为我国的棉纺织技术作出了卓越贡献。

如何做到合理配棉？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。