【单选题】
可燃物质在空气中没有外部火花、火焰等火源的作用，靠自身发热或外来热源引发的自行燃烧现象叫___。
查看试卷，进入试卷练习
微信扫一扫，开始刷题
相关试题
【单选题】
___的燃烧不属于表面燃烧。
A. 木炭D
B. 钨
C. 电焊
D. 合成橡胶
【单选题】
燃烧产物对灭火有利方面___。
A. 引起人员中毒、窒息
B. 在一定条件下有阻燃作用
C. 影响视线
D. 成为火势发展、蔓延的因素
【单选题】
人们正常呼吸的空气中氧气占___左右（体积分数）。
A. 20%
B. 16%
C. 21%
D. 12%
【单选题】
高温能损伤呼吸道，当火场温度达到___时，能使人的血压迅速下降，导致循环系统衰竭。
A. 49～50℃
B. 59～60℃
C. 39～40℃
D. 69-70℃
【单选题】
爆炸是物质从一种状态通过___变化突然变成另一种状态，并放出巨大能量而作机械功的过程。
A. 物理和化学
B. 原子和分子
C. 有机和无极
D. 内因和外因
【单选题】
礼花弹以易燃物和氧化剂为原料混合配制，能引起爆炸，燃烧时间较长，温度高，发射高度一般要求达到___。
A. 100 m以下
B. 100-200m
C. 200～500m
D. 500m以上
【单选题】
影响爆炸品敏感度的因素很多，决定性的内在因素是___。
A. 化学组成和化学结构
B. 高温
C. 杂质
D. 密度
【单选题】
易燃气体是指20℃和101.3kPa条件下，与空气的混合物按体积分数占___或更少时可点燃。
A. 15%
B. 14%
C. 13%
D. 12%
【单选题】
乙炔无色无臭气体，大部分工业品含有硫化物、磷化物等杂质，使其有蒜样气味，极易燃烧爆炸，爆炸极限___。
A. 15％～85％
B. 0.5％～92％
C. 1.5％～12％
D. 2.5％～82％
【单选题】
固体可燃物燃烧而引起的火灾是___。
A. A类火灾
B. B类火灾
C. C类火灾
D. D类火灾
【单选题】
煤气无色有特臭的易燃气体，剧毒，爆炸极限___。
A. 1.5％～10％
B. 2.5％～20％
C. 4.5％～40％
D. 15％～90％
【单选题】
多功能消防水枪主要适用于___。
A. 建筑火灾
B. 交通工具火灾
C. 小面积油类火灾以及可燃
D. 有毒气体等危险化学品泄漏
【单选题】
高压水枪是指喷射压力大于___MPa，与高压消防泵及高压软管卷盘配套使用，具有直流和喷雾功能的消防枪。
A. 2.5
B. 2
C. 1.6
D. 1.2
【单选题】
喷嘴喷射超高压微细水雾的初速度≥200m/s，喷射距离≥___。
A. 13m
B. 15m
C. 18m
D. 20m
【单选题】
消防水带由于具有良好的耐磨、耐压、耐腐蚀、耐寒等性能，且水带内表面光滑的目的___。
A. 对流体的摩擦阻力很小
B. 对流体的摩擦阻力加大
C. 增加灭火剂压力
D. 提升灭火剂流量
【单选题】
垂直铺设水带时，为了减少水带的下坠力应使用___。
A. 消防水带卡箍
B. 使用拉梯
C. 卡牢消防接口
D. 水带挂钩
【单选题】
不属于消防员基本防护装备是___。
A. 消防安全腰带
B. 正压式消防空气呼吸器
C. 消防护目镜
D. 防爆手持电台
【单选题】
消防员防护头盔是用于保护消防员头部、颈部及面部的防护装备，最主要作用是___。
A. 防热辐射、燃烧火焰
B. 防止坠落物冲击和穿透
C. 电击
D. 侧面挤压
【单选题】
消防安全腰带的设计负荷为___，其质量不超过0.85kg。
A. 1.33kN
B. 1.83kN
C. 2.33kN
D. 3.33kN
【单选题】
正压式空气呼吸器气瓶的最高工作压力是___MPa。
【单选题】
高倍数泡沫的发泡倍数不低于___倍。
A. 100
B. 150
C. 200
D. 50
【单选题】
容积为6升，最高工作压力为30MPa的正压式空气呼吸器理论上最大使用时间是___分钟。
【单选题】
消防员可穿着___进入火焰区进行灭火救援。
A. 灭火防护服
B. 封闭式防化服
C. 避火服
D. 防火防化服
【单选题】
___属于输水器材。
A. 水炮
B. 水带
C. 水枪
D. 泡沫管枪
【单选题】
防化手套主要用于___的手部防护。
A. 高电压场合
B. 有割伤场合
C. 化学灾害事故现场
D. 高温场合
【单选题】
___用于产生大流量、远射程、高强度射流，以扑救大规模、大面积火灾。
A. 直流水枪
B. 空气泡沫枪
C. 水（泡沫）炮
D. 多用水枪
【单选题】
通过道路铺设水带时应垫上___。
A. 水带挂钩
B. 水带护桥
C. 水带包布
D. 毛毯
【单选题】
易燃性建筑材料，是在火灾发生时，发生___。
A. 不起火、不微燃、不炭化
B. 难起火、难微燃、难炭化
C. 立即起火或微燃
D. 立即起火，且火焰传播速度
【单选题】
木材及大部分有机材料属于___。
A. 可燃性建筑材料
B. 易燃性建筑材料
C. 难燃性建筑材料
D. 不燃性建筑材料
【单选题】
垂直防火分区，就是将具有___耐火极限的楼板和窗间墙（两上、下窗之间的距离不小于2m）将上下层隔开。
A. 2h或2.5h
B. 1.5h或2h
C. 1h或1.5h
D. 0.5h或1h
【单选题】
按《建筑设计防火规范》，耐火等级一、二级体育馆、剧院的观众厅，展览建筑的展厅，其防火分区最大允许建筑面积可适当放宽___㎡。
A. 1500
B. 2000
C. 2500
D. 5000
【单选题】
耐火等级三级2层楼托儿所、幼儿园的儿童用房和儿童游乐厅等儿童活动场所、老年人建筑和医院、疗养院的住院部防火分区的最大允许建筑面积___㎡。
A. 500
B. 800
C. 1000
D. 1200
【单选题】
___是为人员疏散或消防作业提供照明的消防应急灯具。
A. 应急照明灯
B. 疏散指示标志
C. 应急指示标志
D. 自明灯
【单选题】
高层建筑发生火灾时供人员暂时避难、休息的楼层叫___。
A. 休息层
B. 避难层
C. 安全层
D. 中转层
【单选题】
建筑物周围宜设置环形的消防车道，消防车道的宽度不应小于___。
推荐试题
【单选题】
The reason I did not go abroad was ___ a job in my home town.
A. because
B. due to
C. that I got
D. because of getting
【单选题】
_____ she survived the accident is miracle.
A. What
B. That
C. As
D. Which
【单选题】
I often see ____ the road on his way home.
A. he cross
B. him cross
C. him crossed
D. he crossing
【单选题】
His mother _______ alone since his father died.
A. lived
B. lives
C. has lived
D. is living
【单选题】
The workers are busy _____ models for the exhibition.
A. to make
B. with making
C. being making
D. making
【单选题】
It was well known that Thomas Edison _______ the electric lamp.
A. discovered
B. invented
C. found
D. developed
【单选题】
She wonders ____ will happen to her private life in the future.
A. that
B. it
C. this
D. what
【单选题】
The higher the temperature, _____ the liquid evaporates.
A. the faster
B. the more fast
C. the slower
D. the more slower
【单选题】
Australia is one of the few countries ______ people drive on the left of the road.
A. which
B. that
C. where
D. on which
【单选题】
Sunday is the day ____ people usually don't go to work.
A. when
B. which
C. in which
D. that
【单选题】
____ you know, David has been well lately.
A. Which
B. As
C. What
D. When
【单选题】
The harder you study, _____ you will learn.
A. much
B. many
C. the more
D. much more
【单选题】
They got there an hour _____ than the others.
A. early
B. much early
C. more early
D. earlier
【单选题】
The grey building is the place where the workers live, and the white building is the place where the spare parts ____ .
A. are producing
B. are produced
C. produced
D. being produced
【单选题】
Once environmental damage ______, it takes many years for the system to recover.
A. is to do
B. does
C. had done
D. is done
【单选题】
We worked hard and completed the task ___.
A. in the time
B. on the time
C. ahead of time
D. before time
【单选题】
I didn't expect you to turn _____ at the meeting yesterday.
A. up
B. to
C. out
D. over
【单选题】
I like the teacher _______ classes are very interesting and creative.
A. which
B. who
C. whose
D. what
【单选题】
When Lily came home at 5 p. m. yesterday, her mother ______ dinner in the kitchen.
A. cooked
B. was cooking
C. cooks
D. has cooked
【单选题】
I don’t know the park, but it's _____ to be quite beautiful.
A. said
B. told
C. spoken
D. talked
【单选题】
Mike is better than Peter ____. swimming.
【单选题】
The young lady coming over to us ______ our English teacher; the way she walks tells us that!
A. must be
B. can be
C. would be
D. could be
【单选题】
Eggs, though rich in nourishments, have ______ of fat.
A. a large number
B. the large number
C. a large amount
D. the large amount
【单选题】
Neither John ______his father was able to wake up early enough to catch the morning train.
A. nor
B. or
C. but
D. and
【单选题】
Jane's dress is similar in design ______ her sister's.
A. like
B. with
C. to
D. as
【单选题】
His salary as a driver is much higher than ________.
A. a porter
B. is a porter
C. as a porter
D. that of a porter
【单选题】
_____ these honours he received a sum of money.
A. Except
B. But
C. Besides
D. Outside
【单选题】
Would you let ____ to the park with my classmate, Mum?
A. me go
B. me going
C. I go
D. I going
【单选题】
I have been looking forward to_____ from my parents.
A. hear
B. being heard
C. be heard
D. hearing
【单选题】
The manager will not _____ us to use his car.
A. have
B. let
C. agree
D. allow
【单选题】
_____ her and then try to copy what she does.
A. Mind
B. See
C. Stare at
D. Watch
【单选题】
Will you ___ me a favor, please?
A. do
B. make
C. bring
D. give
【单选题】
It's bad _____ for you to smoke in the public places where smoking is not allowed.
A. behavior
B. action
C. manner
D. movement
【单选题】
The computer system ____ suddenly while he was searching for information on the Internet.
A. broke down
B. broke out
C. broke up
D. broke in
【单选题】
If she wants to keep slim, she must make a ___ in her diet
A. change
B. turn
C. run
D. go
【单选题】
______ the War of Independence, the United States was an English colony.
A.
B. efore B. At
C. In
D. Between
【单选题】
A police officer claimed he had attempted to ____ paying his fare.
A. avoid
B. reject
C. refuse
D. neglect
【单选题】
While I was in the university, I learned taking photos, ______ is very useful now for me.
A. it
B. which
C. that
D. what
【单选题】
He is not seriously ill, but only a ____ headache.
A. obvious
B. delicate
C. slight
D. temporary
【单选题】
On average, a successful lawyer has to talk to several ____ a day.
A. customers
B. supporters
C. guests
D. clients
