Open the window so that _______ if the building is on fire.A.you can get fresh air
Open the window so that _______ if the building is on fire.A.you can get fresh air
B.you can call for help
C.you can easily jump off D.you can be seen first
为何选A 不选B
What are you goingto do if you are in a burning house?How will you escape?Do you know how to save yourself?Please read the following passage....
Windows are also useful when you are waiting forhelp.Be sure to keep the door closed.Or smoke and fire may be drawn into theroom.Keep your head low at the windowto be sure you get fresh air rather than smoke that may leaked(渗) into the room.
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额,这是考火灾自救意识.
如果大楼着火的话,打开窗户让新鲜空气进来.
B的话,大声呼叫估计也听不到,这是高楼.也会吸入有毒气体
C跳楼当然不行
那既然这样,只能选个相对较好的答案了.为何又不选D房间门窗紧闭时，空气不流畅，室内供氧不足，因此，火势发展缓慢，一旦门窗被打开，新鲜空气大量涌入，火势迅速发展。同时大量烟气涌入，容易使人中毒、窒息而死亡。同时，由于空气的对流作用，火焰就会向外窜出，所以在发生火灾时，不能随便开启门窗。在室内发现外部起火，开启房门前，应先触摸门板或门把手，如果发热或有烟气从门缝窜入时，不要贸然开门，应设法从其它出口逃脱。必须开门时，应缓慢开启，并在一侧利用门扇等物作好掩护，防止被烟气熏倒或被热气浪灼伤。最好能用湿布或湿被子做掩护。上面一段摘自网络,所以说这题只能具体问题具体分析了。