建筑钢材中，随着（）含量增加，钢材的强度、硬度提高，塑性和韧性显著下降。

钢结构在一般条件下不会因偶然超载而突然断裂。这主要是由于钢材（）好。

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.

根据《高耸结构设计规范》，焊接材料的强度宜与主体钢材的强度相适应。当不同强度的钢材焊接时，宜按强度（）的钢材选择焊接材料。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

提高钢号对提高轴心受压钢构件的稳定承载力有显著效果（与钢材设计强度成正比）。

冷加工硬化，使钢材强度（），塑性和韧性（），所以普通钢结构中常用冷加工硬化来提高钢材强度。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。