A little knowledge can make a difference at a time of life or death :中文意思是什么?

相关推荐

• A little knowledge can make a difference at a time of life or death.Do you know what to do if you find yourself in an earthquake?If you are inside:Quickly move under a strong desk,a strong table or along a wall.You can also go into a small room like the bathroom.This will protect you from falling things.Do not get into a lift.Don't stand near windows ,large mirrors(镜子) ,heavy furniture or fireplaces.If you're outside:Move away from buildings and stree
• A little knowledge can make a difference at a time of life or death.Do you know what to do if
• A little knowledge can make a difference at a time of life or death :中文意思是什么?
• A little knowledge can make a difference at a time of life or death :中文意思是什么?
• 已知函数y=x/x平方-3x+3（x>0）求1/y的取值范围和函数y的最大值
• 一个做匀速直线运动的物体，通过360米的路程所用的时间是3分钟．如果按照这样的速度运动，通过1.8千米的路程，用多少时间？