航海英語潮汐與涌浪單項選擇題每日一練(2019.01.16)

來源：考試資料網(wǎng)

1 Tides are superimposed on nontidal rising and falling water levels，caused by（）．

2 Set of current is（）.

3 The best time to work a boat into a slip is（）.

4 The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.

5 Neap tides occur only（）.