航海英語磁羅經(jīng)與陀螺羅經(jīng)的使用單項選擇題每日一練(2019.03.30)

來源：考試資料網(wǎng)

1 What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）

2 Indications of the master gyrocompass are sent to remote repeaters by the（）.

3 Variation is a compass error that you（）.

4 Quadrantal error in a gyrocompass has its GREATEST effect（）.

5 The error in a magnetic compass caused by the vessel’s magnetism is called（）.