【单选题】
防雷装置是指___.引下线.接地装置.过电压保护器及其他连接导体的总和。
A. 避雷针
B. 避雷器
C. 导入器
D. 接闪器
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答案
D
解析
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火灾自动报警系统由___.报警装置.警报装置.控制设备和电源五部分组成。
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B. 电气设备
C. 操控装置
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火灾探测器可以把温度.___.辐射光强度等转换成电信号,向火灾报警控制器发送报警信号。
A. 烟雾强度
B. 烟雾浓度
C. 烟气强度
D. 烟气浓度
【单选题】
消防广播从结构形式上可分为___广播和总线制广播两种。
A. 分线制
B. 连线制
C. 多线制
D. 导线制
【单选题】
室外消防给水系统的类型,按消防水压分,可分为高压消防给水系统,临时高压消防给水系统和___。
A. 常压消防给水系统
B. 临时常压消防给水系统
C. 低压消防给水系统
D. 临时低压消防给水系统
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根据对消防用水水量或扬程的不同要求,消防水泵可以采取串连和___两种形式进行连接。
A. 并连
B. 混连
C. 分连
D. 全连
【单选题】
室内消火栓设备,通常由水枪.水带和___组成。
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D. 报警器
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室内火灾的发展过程主要包括初起阶段.___.猛烈燃烧阶段和下降熄灭阶段。
A. 上升阶段
B. 平衡阶段
C. 持续阶段
D. 发展阶段
【单选题】
防火门按其耐火极限可分为甲乙丙三级,耐火极限分别不低于___小时。
A. 2.01.61.2
B. 1.51.21.0
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【单选题】
公共建筑的入场门.太平门的净宽度不应小于()米,紧靠门口()米内不应设置踏步;室外疏散小巷的净宽度不应小于___米。
A. 1.51.44
B. 1.41.53
C. 1.51.54
D. 1.41.43
【单选题】
消防电梯应设___,并宜靠外墙设置。
A. 前室
B. 前门
C. 前厅
D. 避难间
【单选题】
根据装修材料的不同燃烧性能,将内部装修材料分为四级,其中B1为___。
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C. 易燃性材料
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【单选题】
消防用电设备的配电线路应穿管保护,明敷时,必须穿___管。
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低倍数泡沫是指发泡倍数在___倍以下的泡沫。
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C. 20
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【单选题】
人员密集场所火灾特点主要是火势猛烈.蔓延迅速;烟雾浓.毒性大,易造成人员伤亡;___;扑救火灾难度大;疏散困难等。
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火场逃生的原则是:确保安全.迅速撤离,___。
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常见的水枪射流类型有分散射流和___射流。
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一般普通建筑室内消火栓系统最不利消火栓处充实水柱不得小于___。
A. 7m
B. 10m
C. 15m
D. 20m
【单选题】
当二氧化碳在空气中的含量达到___时,燃烧即熄灭。
A. 20%—40%
B. 30%—50%
C. 40%—60%
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【单选题】
高层民用建筑的裙房设置的消火栓,其距离不应超过___米。
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水泵接合器是消防车往室内___供水的接口。
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【单选题】
高层民用建筑和高层工业建筑中封闭楼梯间的门应采用___防火门。
A. 甲级
B. 乙级
C. 丙级
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【单选题】
避难层是___建筑发生火灾时,供人员临时避难使用的楼层。
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【单选题】
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【单选题】
室外疏散楼梯的门应采用___防火门。
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C. 丙级
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【单选题】
一般情况下,水枪的有效射程在___米之间。
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C. 7—15
D. 10—17
【单选题】
室外消火栓有一个直径为___毫米和两个直径65毫米的出水口。
A. 50
B. 80
C. 100
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【单选题】
易燃和可燃液体在燃烧过程中,并不是液体本身在燃烧,而是液体受热时蒸发出来的气体被分解.氧化达到燃点而燃烧称___燃烧。
A. 分解
B. 释放
C. 扩散
D. 蒸发
【单选题】
两种可燃液体混合物的闪点一般___这两个可燃液体闪点的平均值。
A. 低于
B. 高于
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【单选题】
按起火直接原因分类,属于放火的是___。
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【单选题】
按火灾损失严重程度分类,特大火灾是指死亡10人以上(含10人);重伤20人以上;死亡.重伤20人以上;受灾()户以上;烧毁财物损失___万元以上。
A. 40,80
B. 45,90
C. 50,100
D. 55,110
【单选题】
根据燃点的高低,燃烧物质可分为易燃固体和可燃固体,燃点高于___℃的称为称为可燃固体。
A. 200
B. 300
C. 400
D. 500
【单选题】
按照火灾损失严重程度分类,重大火灾是指死亡___人以上;受伤10人以上;死亡.重伤10人以上;受灾户30户以上,烧毁财物损失()万元以上。
A. 9,90
B. 7,70
C. 5,50
D. 3,30
【单选题】
卤钨灯及___w以上的白炽灯泡的吸顶灯的引入线应采用瓷管.石棉.玻璃丝等不燃烧材料作隔热保护。
A. 45
B. 60
C. 75
D. 100
【单选题】
打歼灭战必须以___为前提,就是说灭火战斗的歼灭战,要抓住有利战机,根据火场具体情况,在短时间内夺取灭火战斗的胜利。
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D. 适时进攻
【单选题】
消防水泵的运转试验:每次不应少于___min,并每隔两年对消防水泵进行解体检修。
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建筑物内燃气锅炉房的门应采用___。
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【单选题】
正压式空气呼吸器报警压力为___MpA。
A. 3—5
B. 4—6
C. 5
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【单选题】
氮氧化物一般由___进入人体引起中毒。
A. 呼吸道
B. 皮肤
C. 消化道
D. 视网膜
【单选题】
燃烧的类型归纳起来有___。
A. 有烟燃烧
B. 无烟燃烧
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【单选题】
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【单选题】
If one wants to work efficiently at his low point in the morning, he should __________.___
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【单选题】
Which of the following statements is NOT true?___
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D. Children have energy cycles, too.
【单选题】
An effective way to prevent the burnout of young athletes is __________.___
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Many coaches and parents are in the habit of criticizing young athletes __________.___
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The underlined word "offset" in the second paragraph could be replaced by _________.___
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This passage is primarily about __________.___
A. the greenhouse effect
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What is the major function of paragraph 1?___
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【单选题】
Television, as a source of entertainment, is ________.___
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【单选题】
Why are some people against TV?___
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【单选题】
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【单选题】
The returned plastic bottles in New York used to _____________.___
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The key problem in dealing with returned plastic beverage containers is ______________.___
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【单选题】
Recycling has become the first choice for the disposal of rubbish because ______________.___
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【单选题】
It can be concluded from the passage that ____________.___
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【单选题】
The author chose to study engineering at a small liberal-arts university because he ________.___
A. intended to be a sensible student with noble ideals
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【单选题】
 According to the author, by interacting with people who study liberal arts, engineering students can __________.___
A. broaden their horizons
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【单选题】
In the eyes of the author, a successful engineering student is expected ______________.___
A. to be imaginative with a value system to guide him
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C. to have an excellent academic record
D. to be wise and mature