你可能感興趣的試題

單項選擇題

In plotting a running fix，how many fixed objects are needed to take your lines of position from? （）

A.Three
B.Two
C.One
D.None

單項選擇題

At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.

A.the lines of force cross the equator on a 0°-180°alignment
B.the quadrantal error is 0°
C.there is no vertical component of the Earth's magnetic field
D.the intercardinal headings have less than 1°

Lighted white and orange buoys must show which color light?（）

你可能感興趣的試題

In plotting a running fix，how many fixed objects are needed to take your lines of position from? （）

At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.

In plotting a running fix，how many fixed objects are needed to take your lines of position from? （）