航海英語遇險通信單項選擇題每日一練(2019.07.31)

來源：考試資料網(wǎng)

1 When can routine communications be resumed when radio silence has been imposed?（）

2 A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.

3 When sending a DSC call，the vessel’s（）.

4 Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）

5 A person who sees someone fall overboard should（）.