航海英語(yǔ)求生用語(yǔ)單項(xiàng)選擇題每日一練(2019.01.21)

來(lái)源：考試資料網(wǎng)

1 The danger associated with using carbon dioxide in an enclosed space is（）.

2 After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.

3 A vessel may be unable to take proper and effective action due to the speed（）too high or，in some circumstances，too low.

4 Changing rescuers while carrying out artificial respiration should be done（）.

5 The minimum amount of lifesaving equipment required aboard an 85-foot uninspected towing vessel consists of（）.