航海英語遇險(xiǎn)通信單項(xiàng)選擇題每日一練(2019.01.18)

來源：考試資料網(wǎng)

1 When can routine communications be resumed on a frequency or channel on which radio silence has been imposed? （）

2 Distress flares and smoke signals for small passenger vessels（）.

3 Which condition represents the appropriate time for setting off distress flares and rockets? （）

4 TO EVACUATE A VESSEL FROM CREW AND PASSENGERS FOLLOWING A DISTRESS means（）.

5 The signal to guide vessels in distress，which indicates，“This is the best place to land” is the（）.