问题
单项选择题
If an inflatable liferaft inflates upside down，you can right it by（）.
A.pushing up on one side
B.standing on the CO2 bottle，holding the bottom straps，and throwing your weight backwards
C.getting at least three or four men to push down on the side containing the CO2 cylinder
D.doing nothing; it will right itself after the canopy supports inflate
答案
参考答案：B