- 18
- Mar
yong’inga va portlashga qarshi eshik, yong’inga chidamli o’g’irlikka qarshi eshik, yong’inga chidamli olovga chidamli eshik elimi
Yong’in eshigining vazifasi – kutilmagan yong’in sodir bo’lgan taqdirda yong’inga va tutunning tarqalishiga qarshi turish, bizni evakuatsiya qilish uchun vaqt ajratish imkonini beradi.
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