【单选题】
The socks were too small and it was only by ___ them that he managed to get them on.
A. spreading
B. extending
C. lengthening
D. stretching
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答案
D
解析
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Our guide gave us a detailed ___of this painting but we still do not understand.
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He had an ___ at a restaurant in Greek Street at eight.
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___ with the picture, Mary tore it to pieces.
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进入密闭区域侦察时,应当在___缓慢开启门、窗,并视情向门、窗内射水。
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钢结构建筑火灾最显著的特点是___。
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当混凝土结构温度超过___以后,会造成混凝土强度急剧下降。
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【单选题】
水源距离消防车8米以外且无法靠近,或超过消防车吸水深度,水温超过___度影响水泵真空度时,可使用排吸器供水。
A. 40 ​
B. 50 ​​
C. 60 ​
D. 70
【单选题】
在扑救高层建筑火灾中,疏散和救助遇险和遇难人员的基本顺序是___。
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B. 先着火上层、再着火层、后着火下层
C. 先着火下层、再着火上层、后着火层
D. 先着火层、再着火下层、后着火上层
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在对密闭房间进行排烟时,为防止发生轰燃应采取的措施是___。
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B. 先开启进风口,再开启排烟口
C. 先开启排烟口,再用大量水稀释
D. 减少排烟口数量和面积
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在楼层火灾扑救中担负上层堵截任务的战斗班通常将分水器设置在___。
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B. 燃烧层的下层楼梯间
C. 燃烧层的上层楼梯间
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某高层建筑18层发生火灾,疏散和救助人员途径不正确的是___
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A. 准备展开
B. 局部展开​
C. 预先展开
D. 全面展开
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扑救高层建筑火灾从内部进攻时,水枪阵地要依托___设置。
A. 防火、防烟分区
B. 承重墙
C. 疏散口
D. 窗口
【单选题】
扑救大跨度钢结构建筑火灾,内攻时水枪阵地要依托___设置
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B. 承重墙
C. 疏散口
D. 窗口
【单选题】
在扑救钢结构建筑火灾时,深入内部进攻的前提条件是___。
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B. 调集充足灭火力量
C. 开启排烟窗排烟
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扑救钢结构建筑火灾时,对其构件的冷却要求是___
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扑救带有彩钢屋面板的钢结构建筑火灾时,首先采取的措施是___
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【单选题】
在火灾情况下,疏散仓库内的危险化学品时,对已疏散至安全位置的危险品,要加以看管并___。
A. 分类存放
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D. 通风保护
【单选题】
某一高层建筑,某日发生火灾,火场燃烧面积为600㎡,若灭火用水供给强度为0、15L/s·㎡,火场实际用水量为多少L/s。 ___
A. 40
B. 60
C. 90
D. 400
【单选题】
某一木材堆场,某日发生火灾,火场燃烧面积为1000㎡,若灭火用水供给强度为0、2L/s·㎡,火场实际用水量为多少L/s。___( 中 )
A. 45
B. 90
C. 200
D. 500
【单选题】
危化品槽车交通事故处理时,洗消站的设置地点是___。
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C. 重危区
D. 危险区与安全区交界处
【单选题】
泡沫灭火剂灭火的主要机理是___。
A. 冷却、窒息
B. 抑制燃烧链式反应
C. 降低氧浓度
D. 降低温度
【单选题】
燃烧产物对灭火工作有利的方面是___。
A. 在一定条件下有阻燃作用
B. 引起人员中毒、窒息
C. 影响视线
D. 成为火势发展、蔓延的因素