航海英語航海圖書資料單項(xiàng)選擇題每日一練(2018.11.05)

來源：考試資料網(wǎng)

1 The first indications a mariner will have of the approach of a warm front will be （）.

2 （）day，pilot flag should be displayed from main mast．

3 Vessels should not anchor or trawl in the vicinity of pipelines and are（）in the pipeline area shown on the chart.

4 Information on the operating times and characteristics of foreign radiobeacons can be found in which publication? （）.

5 Periodic publications notifying changes in，or additions to，previously published navigational data are（）.