如果把地球当做是一个立体的椭球体，那么它的扁率1/f等于多少（）？

地球椭球体的基本要素：长半径（）、短半径（）、扁率、笫一偏心率和第二偏心率。

地球平均曲率半径指的是地球椭球体表面上某点无穷多个法截弧的曲率半径的算术平均值。（）

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。

（）是把地球假设为刚体不变，均匀旋转的球体或椭球体，并在一定范围内测绘地球和研究其形状、大小及外部重力场。

决定地球椭球体形状大小的参数有哪些（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。