航海英語(yǔ)救生作業(yè)單項(xiàng)選擇題每日一練(2019.01.14)

來(lái)源：考試資料網(wǎng)

1 The lights on the outside of the canopy on an inflatable liferaft operate（）.

2 A rigid lifesaving device designed to support survivors in the water is a（）.

3 How should signal flares be used after you have abandoned ship and are adrift in a liferaft?（）.

4 If an inflatable liferaft is to be released manually，where should the operating cord be attached before throwing the raft overboard?（）

5 Generally，what is used to inflate liferafts?（）.