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(2019.01.11)

來源：考試資料網(wǎng)

1 Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）.

2 When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.

3 The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is（）.

4 A ship under construction or major repair will acquire permanent magnetism due to（）while sitting stationary in the earth’s magnetic field.

5 The principal purpose of magnetic compass adjustment is to（）.