航海英語GPS、DF及LC的使用單項選擇題每日一練(2019.01.09)

來源：考試資料網

1 The operation of which aids to navigation may be suspended during war or national emergency（）.

2 The loran lines drawn on navigation charts represent（）.

3 Error may be introduced into a magnetic compass by（）.

4 Based on a DR，at approximately 1817 you would expect to（）.

5 （）is on the panel of DF.