航海英語緊急用語單項(xiàng)選擇題每日一練(2019.01.07)

來源：考試資料網(wǎng)

1 Messages concerning weather conditions transmitted by radiotelephone are preceded by（）.

2 The urgency signal concerning the illness of persons on board ship is（）.

3 We have no steel wire．You had better（）us one.

4 The towing light is a(n)（）.

5 Which radiotelephone signal indicates receipt of a distress message?（）