航海英語緊急用語單項(xiàng)選擇題每日一練(2019.01.19)

來源：考試資料網(wǎng)

1 After a vessel transmits the original distress message，what signal should be sent to allow ships to take RDF bearings?（）

2 Tripping defects in anchors frequently occur in（）.

3 There is plenty of（）at this area.

4 The radiotelegraph alarm signal is（）.

5 The towing light is a(n)（）.