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
2023-08-25
58
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/2956458.html
相关试题推荐
[originaltext]W:I’mtryingtoloseweightbyrunning,butalltheexerciseis
[originaltext]W:Dr.Adams,yournewbook,LearningaLanguageOverEggsandTo
[originaltext]W:WhynotwriteabouttheancientcivilizationofMexico?Youar
[originaltext]M:Twoseminars?That’squiteaheavyload.Canyouhandlethewo
[originaltext]M:Sandyworkedasatourguideforafamousagencyduringthesu
[originaltext]Whencaughtinpouringrainwithoutanumbrella,mostpeople
[originaltext]TheWorldHealthOrganizationsaysalcoholabuseisthethird
[originaltext]Arunneronmyteamtookanastyspillthisweekendonarunn
[originaltext]M:Wouldyouliketohavesomejellies?I’vegotavarietyoffla
[originaltext]W:Areyoustillworryingaboutthenewprojectplan?Acampingt
随机试题
WhywasthepassengerjetforcedtolandatHalifax,Canada?[br][originaltext
Simonhadabagofsweets.Whenhetriedtodividethesweetsintothreepilesh
Micro-EnterpriseCreditforStreetYouthA)Althoughsmall-sc
下列疾病常以BAO升高为特征的是A.胃泌素瘤 B.胃癌 C.胃溃疡发作期
一、调查表明,从2007年到2016年的十年间,A市常住人群高血压患病率上升了2
建设中国特色社会主义的政治,就是在中国共产党领导下,在人民当家作主的基础上()。
边界协议书附图的内容应包括边界线、界桩点及相关的地形要素、名称、注记等,各要素应
国家电网公司安全监察质量部(以下简称“国网安质部”)履行的职责包括:(一)()变
从长期来看,小型资本股票回报率和大型资本股票回报率相比()。A:更低 B:更高
外墙保温施工要求中,采用粘结固定的外保温系统,施工前应按标准规定做基层墙体与胶粘
最新回复
(
0
)