航海英語GPS、DF及LC的使用單項(xiàng)選擇題每日一練(2019.01.20)

來源：考試資料網(wǎng)

1 Vessels in port may use（）for receiving typhoon warnings during the typhoon season.

2 It may be found that，in certain circumstances，Radar Beacon can cause unwanted interference particularly（）.

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

4 （）is a digitized“picture”of a chart.

5 Radar is not only to obtain（），but also to measure their distance away from you.