航海英語航路指南單項選擇題每日一練(2019.01.14)

來源：考試資料網(wǎng)

1 On a voyage from Halifax,N.S.,to Dakar,West Africa,the Canary Current will （）.

2 The distance between the surface of the water and the tidal datum is the （）.

3 The height of a light is measured from which reference plane?（）

4 An occulting light is one in which （）.

5 Attention is called to the fact that in many cases pipelines are not （） and charted depths may be decreased by up to 2 meters．