航海英語進港指南單項選擇題每日一練(2019.01.07)

來源：考試資料網

1 From （）the mariner can understand the data of tide．

2 Data relating to the direction and velocity of rotary tidal currents can be found in the （）.

3 Insufficient space between the hull and bottom in shallow water will prevent normal screw currents resulting in （）.

4 An anchored vessel on pilotage duty must show which light(s) at night? （）

5 The iron mike is a(n) （）.