在反复荷载作用下的结构构件，钢材往往在应力远小于抗拉强度时发生断裂，这种现象称为钢材的（）。

拉应力应尽量控制在钢材屈服极限的（）以下。

在多轴应力状态下，在钢结构中采用的钢材极限条件是（）

177、钢材，尤其是钻杆，其使用拉应力需控制在钢材屈服强度的（）以下。

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。

注册消防工程师应当通过继续教育不断更新、补充、拓展知识和技能，完善知识结构，提高综合素质和专业技术水平。根据《注册消防工程师继续教育实施办法》，下列说法中错误的是(    )。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。