САМОСПАСАТЕЛИ ШАНС
Самоспасатели, применяемые при пожаре. Фильтрующие и изолирующие. Их эффективность и ограничения. Обзор (1 часть)
4 days ago 00:02:01 574
1 month ago 00:06:23 6.8K
2 months ago 00:07:54 1
2 months ago 00:02:21 32
2 months ago 00:05:15 20
2 months ago 00:05:15 3.3K
2 months ago 00:01:25 7
3 months ago 00:02:30 126
3 months ago 00:21:54 9
4 months ago 00:04:41 15.6K
4 months ago 00:00:09 2.7K
4 months ago 00:01:41 716
4 months ago 00:02:22 1
5 months ago 00:01:01 1
5 months ago 00:02:02 1
7 months ago 00:01:05 4
7 months ago 00:27:59 272
7 months ago 00:28:00 13
7 months ago 00:00:44 47.5K
7 months ago 00:01:40 9.3K
7 months ago 00:01:11 2
8 months ago 00:03:21 378
9 months ago 00:00:56 1
9 months ago 00:10:34 1
