Because the dischargeable smokecover of the utility model can steer with wind, the utility model arranged on the top of the chimney can automatically shield from wind and sleet.
由于本技术的排烟罩随风转向，安装在烟囱顶部能自动防风遮雨雪。
2
Do not cover or block your smoke detector in any way.
无论如何都不要盖住或阻塞你的烟雾探测器。
3
When there's a fire, follow the teachers' instructions, leave the classroom quickly and use a piece of cloth to cover your mouth and nose so that you don't breathe in smoke.