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。

加权算术平均数中权数的实质是（）

加权算术平均数的实质权数是频数。

加权算术平均数的实质权数是频数。 ( )

加权算术平均数中权数的实质是（ ）。

加权算术平均数的权数实质上是（ ）。

加权算术平均数的权数实质上是( )。

权数对平均数起权衡轻重的作用，不取决于它的（）的大小，而是取决于它的（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。