当力的作用线通过矩心时，力对该点的（）为零。

当力的大小等于零，或力的作用线通过矩心（力臂d=0）时，力矩为（）。

当力与某坐标轴平行或相交时，则力对该轴之矩为零。

互成平衡的二力对同一点之矩的代数和等于（）。

力对点之矩等于零有两种情况：（）和（）。

当力沿作用线移动时，该力对任一点之矩将（）

当力平行于坐标轴时其投影等于零。

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。