表征砼抗冻性的指标是（）。

影响石料的抗冻性的关键内因是（）

影响混凝土抗冻性的因素及措施。

用来评判混凝土抗冻性的试验是（）。

评价岩石抗冻性的指标是（）

通过岩石的吸水性能反应岩石抗冻性的指标是（）。

关于岩石的软化性和抗冻性的说法正确的是（）。

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。