航海英語遇險用語單項選擇題每日一練(2019.01.20)

來源：考試資料網(wǎng)

1 If you hear the firing of a gun at one minute intervals from another vessel，this indicates that（）.

2 If you are transmitting a distress message by radiotelephone you should（）.

3 What is NOT a distress signal?（）

4 The radiotelegraph alarm signal may be used to announce（）.

5 The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.