航海英語航海通告與警告單項(xiàng)選擇題每日一練(2019.01.11)

來源：考試資料網(wǎng)

1 Steam smoke will occur when（）.

2 Navigational warnings are published according to（）.

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

4 A steep barometric gradient indicates （）.

5 A chart has extensive corrections to be made to it. When these are made and the chart is again printed，the chart issue is a （）.