长途旅行,飞机是最快捷的交通工具,飞机起飞和降落前有很多规定。那么,这些规定是为什么呢?乘务员会提醒乘客收起小桌板,调直坐椅靠背。这是因为飞机在起飞、着陆这种可能出现大冲击、减速的阶段,收起小桌板和坐椅调整好角度可以减小人体受到的冲击及割伤的可能。还有就是在应急撤离的时候,可以防止人员通过时产生阻碍。客舱灯光开始变暗,乘务员还会让乘客打开遮阳板,这是为了让人眼适应外界光线,减 Long-distance travel, the aircraft is the fastest means of transport, the aircraft take off and landing before there are many provisions. So, what are these rules? The flight attendant will remind the passengers to pick up the tablet and straighten the seat backrest. This is because the aircraft during take-off, landing the stage of possible large impact, deceleration, stowage small tables and chairs to adjust the angle can reduce the impact of the human body and the possibility of cuts. There is also in the emergency evacuation, you can prevent obstacles when passed by. Cabin lights began to darken, flight attendants will allow passengers to open the sun visor, which is to allow the human eye to adapt to the outside light, minus