.快速拉动氧气面罩，开始供氧
A.Quickly turn on the oxygen system, the mask begins to supply oxygen. B.Pull the oxygen mask with a sudden movement to start the flow of oxygen. C.Suddenly start the oxygen supply system, the lake drops.正确答案B
.快速拉动氧气面罩，开始供氧
A.Quickly turn on the oxygen system, the mask begins to supply oxygen. B.Pull the oxygen mask with a sudden movement to start the flow of oxygen. C.Suddenly start the oxygen supply system, the lake drops.正确答案B
