有时间准备的陆地/水上迫降发出防冲击口令（）

A."抱紧,防撞!""Brace for impact

B.低头,弯腰,全身紧迫用力!""Heads down!Brace for impact

C.到这边来,充气,跳!Come this way!Infate your vest!Jump

D.到这边来，跳，坐。come this way，Jump，sit