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2026年注安技术第四章真题考点:可燃气体爆炸与爆炸极限

2026年注安技术第四章真题考点:可燃气体爆炸与爆炸极限
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考点:可燃气体爆炸与爆炸极限

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1、爆炸过程表现为两个阶段:在第一阶段,物质的(或系统的)潜在能以一定的方式转化为强烈的压缩能;第二阶段,压缩物质急剧膨胀,对外做功,从而引起周围介质的变化和破坏。下列关于爆炸破坏作用的说法中,正确的是()。

A.爆炸形成的高温、高压、低能量密度的气体产物,以极高的速度向周围膨胀,强烈压缩周围的静止空气,使其压力、密度和温度突跃升高

B.爆炸的机械破坏效应会使容器、设备、装置以及建筑材料等的碎片,在相当大的范围内飞散而造成伤害

C.爆炸发生时,特别是较猛烈的爆炸往往会引起反复较长时间的地震波

D.粉尘作业场所轻微的爆炸冲击波导致地面上的粉尘扬起,引起火灾    

参考答案:B

参考解析:A选项错误。爆炸形成的高温、高压、高能量密度的气体产物,以极高的速度向周围膨胀,强烈压缩周围的静止空气,使其压力、密度和温度突跃升高。C选项错误。爆炸发生时,特别是较猛烈的爆炸往往会引起短暂的地震波。D选项错误。粉尘作业场所轻微的爆炸冲击波会使积存在地面上粉尘扬起,造成更大范围的二次爆破。

2、分解爆炸性气体在温度和压力的作用下发生分解反应,可产生相当数量的分解热,进而发生爆炸。如乙炔在没有氧气的条件下,也会发生分解爆炸。关于乙炔爆炸及其预防的说法,正确的是(  )。

A.乙炔分解爆炸所需的发火能比乙烯的发火能低

B.一定的温度和压力是乙炔发生分解爆炸的内因

C.可以用铜含量超过 65%的铜合金容器盛装乙炔

D.乙炔分解爆炸所需的能量随压力的升高而增加

参考答案:A

参考解析:A选项正确。乙烯分解爆炸所需的发火能比乙炔的要大;B选项错误。一定的温度和压力是乙炔发生分解爆炸的外因,分解热是内因;C选项错误。不能用含铜量超过65%的铜合金制造盛乙炔的容器;D选项错误。乙炔分解爆炸所需的能量随压力的升高而降低。

3、 某些气体即使在没有氧气的条件下也能发生爆炸,其实这是一种分解爆炸。下列气体中,属于分解爆炸性气体的是(  )。

A.一氧化碳

B.乙炔

C.氧气

D.氢气

参考答案:B

参考解析:某些气体如乙炔、乙烯、环氧乙烷等,即使在没有氧气的条件下也能发生爆炸,其实质是一种分解爆炸。

4、分解爆炸性气体在温度和压力的作用下发生分解反应时,可产生相当数量的分解热,为爆炸继续提供能量,因此即使不需要氧气,分解爆炸也能够发生。下列物质中能够发生分解爆炸的是(  )。

A.臭氧

B.氰化氢

C.氧气

D.一氧化氮

E.四氟乙烯  

参考答案:A,B,D,E

参考解析:能发生分解爆炸的气体有:乙炔、乙烯、环氧乙烷、臭氧、联氨、丙二烯、甲基乙炔、乙烯基乙炔、一氧化氮、二氧化氮、氰化氢、四氟乙烯等。

5、物质爆炸会产生多种毁伤效应。下列毁伤效应中,属于黑火药在容器内爆炸后可能产生的效应有()。

A.冲击波毁伤

B.碎片毁伤

C.震荡毁伤

D.毒气伤害

E.电磁力毁伤

参考答案:A,B,C,D

参考解析:爆炸破坏作用包括冲击波、碎片冲击、震荡作用、次生事故、有毒气体。

6、乙炔即使在没有氧气的条件下,也可能发生爆炸,其实质是分解爆炸,下列描述乙炔性能及其使用的安全要求中,正确的有()。

A.乙炔受热时,容易发生聚合、加成、取代或爆炸性分解等反应

B.乙炔的火灾爆炸危险性很大,但爆炸下限高于天然气

C.乙炔易与汞等重金属反应生成爆炸性的乙炔盐

D.乙炔不能用含铜量超过65%的铜合金制造的容器盛装

E.乙炔作为焊接气体时,选择焊丝时不能选用含银焊丝 

参考答案:A,C,D,E

参考解析:本题重点考查可燃气体爆炸。选项A正确,当乙炔受热或受压时,容易发生聚合、加成、取代或爆炸性分解等反应。选项B错误,乙炔的火灾爆炸危险性很大,但爆炸下限低于天然气。选项C正确,乙炔易与铜、银、汞等重金属反应生成爆炸性的乙炔盐,这些乙炔盐只需轻微的撞击便能发生爆炸而使乙炔着火。选项DE正确,为防止乙炔分解爆炸,安全规程中规定:不能用含铜量超过65%的铜合金制造盛乙炔的容器;在用乙炔焊接时,不能使用含银焊条。

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  1. CONNECT:[ UseTime:0.001068s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001423s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000727s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000626s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001412s ]
  6. SELECT * FROM `set` [ RunTime:0.000603s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001464s ]
  8. SELECT * FROM `article` WHERE `id` = 956214 LIMIT 1 [ RunTime:0.004379s ]
  9. UPDATE `article` SET `lasttime` = 1787320191 WHERE `id` = 956214 [ RunTime:0.002119s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000673s ]
  11. SELECT * FROM `article` WHERE `id` < 956214 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001176s ]
  12. SELECT * FROM `article` WHERE `id` > 956214 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001050s ]
  13. SELECT * FROM `article` WHERE `id` < 956214 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001575s ]
  14. SELECT * FROM `article` WHERE `id` < 956214 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.038552s ]
  15. SELECT * FROM `article` WHERE `id` < 956214 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.013908s ]
0.258643s