或者“全班同学都是团员”为假，或者“全班同学都不是团员”为假；“全班同学都不是团员”为假；所以“全班同学都是团员”为真。推理是否有效？为什么？

当A为真、B为真、C为假，它们做“或”运算的结果（）。

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.

当“本案罪犯或者是张某，或者是王某”这个判断为假时，必然为真的判断是（）。

若p为假，q为假，则p→q为（）

若p为假，q为假，则q→p为（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

根据真值模态推理，“某甲必然是凶手”为真，则（）为假，（）为真，（）为假。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。