直线电流产生的磁场，以（）拇指的指向表示电流方向，弯曲四指的指向即为磁场方向。

翻译：With Average or With Particular Average（WA or WPA）（）

磁子午线的方向可用罗盘仪测定。

测量上所选用的平面直角坐标系，规定X轴正向指向北方向

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.

地图的数学要素包括地图的（）等内容，是地图制图的基础

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

面料经纬向判定，对于有布边的面料，与边平行的方向为（）（经向or纬向）

在地图学上，把地理空间的实体分为三种要素，下面哪个不属于（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。