负温下厚度大于（）的钢板应分多层焊接。

钢筋冷拉不可在负温下进行。

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.

钢材的性能因温度而改变，在负温范围内钢材的塑性和韧性（ ）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

冬季混凝土施工在负温条件，（）养护。

负温下钢结构使用防火或防腐涂料时，下面说法错误的是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。