求一篇四级作文(关于火灾的)

我要的是四级作文!!

1、怎样预防电器引发的火灾
预防电器火灾,包括四个方面的内容:一是电器的选择,二是导线的选择,三是安装和使用,四是不要擅自使用大功率电器。对电器应选择名牌厂家生产的合格产品,安装要符合规定,使用要按说明书的要求,不乱拉电线。教学工作必须使用较大功率电器时,要请专业电工人员安装专用线路,不得与其它电器同时混用。平时不用电时,要断掉电源。下面列举一部分常用电器的火灾预防:
(1)电视机的防火措施
连续开电视4-5个小时需关机休息一会儿,特别是气温高的季节。
不要靠近热源,看电视时不要用电视罩覆盖电视机。
防止液体或昆虫进入电视机。
室外天线要有避雷装置和接地设施,用室外天线雷雨天不要开电视。不看电视时要切断电源。
(2)洗衣机防火措施
不要让电机进水短路,不要因衣物多或硬物卡住电机而造成闷机现象导致发热着火。
不要用汽油、乙醇清洗电机上的污物。
(3) 电冰箱防火措施
冰箱散热器温度很高,不要在冰箱后面放易燃物品。
不能用冰箱存乙醇等易燃液体,因为冰箱启动时产生火花。
不要用水洗冰箱,以免短路引燃冰箱组件。
(4)电褥子防火措施
不要折叠以免损伤电线绝缘层,造成短路而引发火灾。
不要长时间使用电热毯,离开时一定要断电,以免过热发生火灾。
(5) 电熨斗的防火措施
电熨斗温度很高,能引燃一般的物质。所以电熨斗使用时一定要有专人看护,通电时间不宜太长,用完一定要断电,放在隔热的架子上自然降温,防止余热引起火灾。
(6) 微机的防火措施
防止受潮和液体进入微机,防止昆虫爬进微机中。
微机使用时间不宜过长,风扇的散热窗要保持空气通畅。
不要接触热源,保持接口插头接触良好。
注意消除隐患。微机室电气线路、设备多而复杂,材料多为易燃性材料,人员聚集、流动性大、管理混乱等问题都是隐患,应有针对性地落实防范措施。
(7) 灯具的防火措施
灯具的开关、插座、照明器具靠近可燃物时,应保证隔热、散热措施。
白炽灯当电流通过时,可产生2000-3000摄氏度的高温而发光,由于灯泡中充满惰性气体可以导热,所以玻璃表面的温度也很高,功率越大,升高的温度越快,白炽灯与可燃物距离应大于0.5米,灯泡下方不应放可燃物。晚间看书学习时,不要将照明灯具放在被褥上。
2、怎样预防吸烟引发的火灾
烟头虽小,可危害性大,它的表面温度在200—300摄氏度之间,中心温度可达700—800摄氏度左右,一般可燃物(如纸张、棉花、柴草、木材等)的燃点均在130—350摄氏度之间,都低于烟头的温度,所以烟头可以引燃大部分物质,因此乱扔烟头很容易引发火灾。吸完烟后应将烟头“掐死”,放在烟灰缸或金属、玻璃等不易燃器具内,不要随意乱扔,更不能在禁烟场所吸烟
温馨提示:答案为网友推荐,仅供参考
第1个回答  2010-12-13
英语四级吗?你看看合适吗
(一)Fire Prevention on Campus
1.前段时间校园火灾频发,造成生命和财产损失
2.分析火灾发生的原因
3.作为学生,如何预防校园火灾发生
●审题概述●
这是一分析火灾原因和如何预防火灾为中心的文章,撰写时重点即在于此。开篇综述校园火灾频发情形及造成的生命和财产损失,然后说明火灾原因,最后提出可能的火灾预防措施。第一段,主要概述;第二段,说明原因;第三段,详细论述措施。
【范文】

Fire Prevention on Campus
People are alarmed by the succession of campus fires in recent years. In each of these accidents, heavy casualties were reported – houses were burned down, students lost their lives,and properties were damaged. Faced with such a chilling fact, people keep asking, “What on earth results in these repeated tragedies?”
A brief survey of them reveals that human factors still prove to be the leading causes. For example, three of these fires were caused by the students’ use of electric water-heaters. As students often leave the heaters unattended, the risks are rather high should the water in the bottle boil dry while no one is around to turn off the power. In other cases, fires were also caused by stoves, candles, cigarette butts, etc.
Since most of these disasters could have been prevented if proper precautions had been taken, students should be better educated on the importance and measures of fire control. The following three reminders are of particular importance for us students: First, learn how to use a fire extinguisher. Second, double-check candles, heaters, stoves and other electric appliances, and make sure there are no open flames before leaving rooms. Lastly, do not smoke in the dorm.

◇第一段思路点评:概述并引入下文
◇语言点提示:
(1)此句What on earth results in these repeated tragedies? 常可作为过渡句,引出下文
(2)注意描述有关火灾客观事实,多使用被动语态,如are alarmed by,were reported,were burned down,were damaged,Faced with。
◇第二段思路点评:论述火灾的主要原因是使用电热水器,还有造成火灾的次要原因是实用电炉、蜡烛和乱扔烟蒂◇语言点提示:electric water-heaters电热水器
◇第三段思路点评:详述预防火灾的三点措施,注意使用连接词语first, second, lastly。
◇语言点提示:
take precautions采取预防措施
fire extinguisher灭火器
第2个回答  2010-12-13
There was a big fire in one office building in our neighborhood at about nine4 o'clock last night. Many firemen and fire engines came. In the beginning, we saw flames with thick black smoke coming out from the sixth floor; and we also heard the explosion of the gas tank mixed with the noisy sounds from shattering windows. Soon the fire spread one by one to the floors above, and finally reach the top floor. Some aluminum window frames and some brick walls meted and collapsed from the heat. Many people like myself stood outside on the streets watching the fire in horror as we heard the sirens and gas explosions. Luckily there was no one in that office building when the fire broke out. The fire-men were unable to control the fire until the top floor was burned out; it took about one and a half hours for the firemen to put out the big fire. The next morning newspapers carried the story and pictures of the fire.本回答被网友采纳
第3个回答  2010-12-13
There was a big fire in one office building in our neighborhood at about nine4 o'clock last night. Many firemen and fire engines came. In the beginning, we saw flames with thick black smoke coming out from the sixth floor; and we also heard the explosion of the gas tank mixed with the noisy sounds from shattering windows. Soon the fire spread one by one to the floors above, and finally reach the top floor. Some aluminum window frames and some brick walls meted and collapsed from the heat. Many people like myself stood outside on the streets watching the fire in horror as we heard the sirens and gas explosions. The fire-men were unable to control the fire until the top floor was burned out; it took about one and a half hours for the firemen to put out the big fire. The next morning newspapers carried the story and pictures of the fire.