除成型碾压混凝土试件振动密实时必须加压重块（试件表面压强为4900Pa）外，碾压混凝土性能试验方法与常态混凝土试验方法相同。

钢筋混凝土试验结构构件的钢筋应取试件作（）等力学性能试验。

混凝土力学试验中,可以将试件成型时抹平的面作为受力面。( )

混凝土力学试验中,不应将试件成型时抹平的面作为受力面。( )

钢筋混凝土试验结构构件的钢筋应取试件作（）等力学性能试验。

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。