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距一消考试129天:继续做真题

  • 2026-07-14 19:00:12
距一消考试129天:继续做真题

朋友你好,我是超哥。今天距离一消考试还有129天。

下列参数中,与可燃气体混合物的爆炸危险性无关的是( )。

A 爆炸极限

B 传爆能力

C 引燃温度

D 最大点燃电流

这道题考察的是记忆,但是一消知识点这么多,这个点又不是常考点,如果记忆这个点,性价比就不高了。

乍一看,好像都与爆炸危险性有关,如果仔细看一下,D项是最大点燃电流,这个就不合适了。从理解角度,如果是爆炸危险性,那一般应跟最小的点燃电流有关,所以选D吧。

这道题的正确答案就是D。

爆炸性混合物的危险性是由它的爆炸极限、传爆能力、引燃温度和最小点燃电流决定的。

所以,有时候遇到这种没记住的题,或者没见过的知识,可以仔细分析一下,也能选出正确答案。

A(爆炸极限):相关。爆炸极限范围越宽,特别是爆炸下限越低,发生爆炸的可能性就越大,危险性越高。

B(传爆能力):相关。传爆能力直接反映了爆炸危险程度的高低,传爆能力越大,危险性越高。

C(引燃温度):相关。引燃温度越低,物质越容易被点燃,其爆炸危险性也就越大。

D(最大点燃电流):无关。这个概念用于对爆炸性气体混合物进行分级(如分为ⅡA、ⅡB、ⅡC三级),但它本身并不是用来直接衡量混合物爆炸危险性高低的参数。与危险性直接相关的是“最小点燃电流”——最小点燃电流愈小,危险性就愈大。选项D的说法与此相反,因此与危险性无关。


由于本人水平有限,文中难免有纰漏之处,还请批评指正。

往期精彩:

一消老师推荐:丁谦

一消老师推荐:齐德龙

只有两个人付费,为什么我还要坚持更新《一消小白100问》?

我是超哥(个人,非机构),省级科技进步奖获得者,40岁考出了一级消防工程师,认为3个月就可以考出一消。

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  139. /yingpanguazai/ssd/ssd1/www/www.sjds.net/runtime/temp/5febe16c9207553ef9b4c4406f7af920.php ( 12.06 KB )
  140. /yingpanguazai/ssd/ssd1/www/www.sjds.net/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000619s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000967s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000364s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000280s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000522s ]
  6. SELECT * FROM `set` [ RunTime:0.000240s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000573s ]
  8. SELECT * FROM `article` WHERE `id` = 506756 LIMIT 1 [ RunTime:0.000398s ]
  9. UPDATE `article` SET `lasttime` = 1784090981 WHERE `id` = 506756 [ RunTime:0.023395s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000332s ]
  11. SELECT * FROM `article` WHERE `id` < 506756 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000516s ]
  12. SELECT * FROM `article` WHERE `id` > 506756 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000429s ]
  13. SELECT * FROM `article` WHERE `id` < 506756 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000827s ]
  14. SELECT * FROM `article` WHERE `id` < 506756 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000612s ]
  15. SELECT * FROM `article` WHERE `id` < 506756 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000654s ]
0.121348s