首页
登录
职称英语
[originaltext] To extinguish different kinds of fires, several types of fire
[originaltext] To extinguish different kinds of fires, several types of fire
游客
2024-04-26
57
管理
问题
To extinguish different kinds of fires, several types of fire extinguishers have been invented. They must be ready for immediate use when fire breaks out. Most portable kinds operate for less than a minute, so they are useful only on small fires. The law requires ships, trains, buses and planes to carry extinguishers.
Since fuel, oxygen and heat must be present in order for fire to exist, one or more of these things must be removed or reduced to extinguish a fire. If the heat is reduced by cooling the material below a certain temperature, the fire goes out. The cooling method is the most common way to put out a fire. Water is the best cooling material because it is low in cost and easy to get.
Another method of extinguishing fire is by cutting off the oxygen. This is usually done by covering the fire with sand, steam or some other things. A blanket may be used to cover a small fire.
A third method is called separation, which includes removing the fuel or material easy to burn from a fire, so that it can find no fuel.
The method that is used to put out a fire depends upon the type of fire. Fires have been grouped in three classes. Fires in wood, paper, cloth and the like are called Class A fires. These materials usually help keep the fire on. Such fires can be stopped most readily by cooling with water.
Questions 16 to 18 are based on the passage you have just heard.
16. Which method is used if we cover a small piece of burning wood with a basin in order to stop the fire?
17. What should we first be clear about in choosing how to put out a fire?
18. What would the speaker probably discuss in the paragraph that follows?
选项
A、When it breaks out.
B、How it comes about.
C、What kind it is.
D、Where it takes place.
答案
C
解析
根据第16题分析可知,选项中的it指代的是火灾。由短文中提到的the methodthat is used to put out a fire depends upon the type of fire可知,选择如何灭火取决于火的类型,故答案为C)。that引导定语从句,the method为先行词。C)中的kind与短文中type为同义词。
转载请注明原文地址:https://tihaiku.com/zcyy/3572722.html
相关试题推荐
[originaltext]Karen,grownupinaverytraditionalfamilyinthewesternU
[originaltext]Therewasonceamanwhospentallhistimeinhisglasshouse
[originaltext]Therewasonceamanwhospentallhistimeinhisglasshouse
[originaltext]Therewasonceamanwhospentallhistimeinhisglasshouse
[originaltext]Toextinguishdifferentkindsoffires,severaltypesoffire
[originaltext]Toextinguishdifferentkindsoffires,severaltypesoffire
[originaltext]M:Morning,Brenda.W:Goodmorning,MrBrowning.M:Er,didyou,
[originaltext]W:DrJones,howexactlywouldyoudefineeccentricity?M:Well,
[originaltext]W:DrJones,howexactlywouldyoudefineeccentricity?M:Well,
[originaltext]W:Oh,ProfessorJackson,Iwaswonderingwell,oh...well,ifuh.
随机试题
Whendawncame,theyrealizedthattheboatwasblockedinice.Thecaptain(81
Onemanwastomeethiswifedowntownandspendsometimeshoppingwithher.
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30ye
Whichmemberormembersofthespeaker’sfamilyhavehealthproblems?[br]Whyd
[originaltext]ManmohanSingh,knownasthearchitectofIndia’srecentecono
英国航空公司所属波音747客机008号班机,准备从伦敦飞往8本东京时,因故障推迟
中国加入WT0可能会使某些行业的生命周期发生变化。( )
下列不能作为商业银行向中央银行进行再贷款质押凭证的是()。A:国库券 B:金融
D股票当前市价为25.00元/股,市场上有以该股票为标的资产的期权交易,有关资料
所有者权益变动表的作用是()。A、反映构成所有者权益(或股东权益)的各组成部分
最新回复
(
0
)