丰满又黄又爽少妇毛片免费看,91红桃在线视频黄色,无码免费婬A片自慰网站2023,国产成人电影在线播放

National service hotline :  0532-82525690
logo_2
TIANJUXIANG 


NEWS DETAILS

What fire extinguishers do you have at home? Is the fire door qualified?

author: from: time:2022-12-05

Fire extinguishers, fire doors, fire hoses... These are all fire products to protect the lives and property of citizens. However, with the growing sales channels of these products, some fake and inferior products emerge in endlessly.

What does a qualified fire door look like inside? The real code can be checked

Dry powder, water-based and gas (carbon dioxide) extinguishers, which one is suitable for household use

With the temperature getting warmer, it entered the high incidence period of fire in spring. Residential areas, centralized charging points for battery cars and other fires occur frequently. At the beginning of the fire, what can citizens do?

"As long as any fire occurs, the first thing is to call the '119' alarm. At the same time, you can evaluate the fire situation and decide whether to save yourself or escape." Firefighters suggested that in the case of a small fire, citizens could try to put out the fire by themselves while ensuring their own safety.

Citizens should extinguish their own fires, and fire extinguishers are the most important tools. At present, the mainstream types of fire extinguishers on the market are dry powder extinguisher, water-based extinguisher and gas (carbon dioxide) extinguisher.

In the experiment, the fireman simulated the battery fire of the battery car. After the battery of the battery car catches fire, the flame presents a jet shape and burns rapidly and violently.

The firefighters successively used dry powder extinguisher, water-based extinguisher and gas (carbon dioxide) extinguisher to extinguish the fire.

The use of dry powder fire extinguisher has little effect on the battery fire, and the battery will re ignite after being covered with dry powder for a short time.

Subsequently, firefighters use gas (carbon dioxide) extinguishers to extinguish the fire. When the extinguisher sprays gas (carbon dioxide), the flame will be suppressed instantly, but the battery will re ignite after the extinguisher is removed.

Finally, firefighters used water-based extinguishers to extinguish the fire. Although the fire was still not completely extinguished, the fire weakened after use.

"The biggest feature of the battery fire is that the battery is constantly reacting inside, causing the fire to re ignite." Firefighters said that the best way to put out the fire of the battery car is to use a large amount of water to impact the fire area, cool down the fire location and prevent the reaction from continuing.

"Although none of the three types of fire extinguishers can completely extinguish the battery car fire, it is obviously felt that the fire extinguisher can still work." Firefighters said that it is generally recommended to equip dry powder or water-based fire extinguishers at home. "The cost of dry powder extinguishers is lower, while that of water-based extinguishers is higher."


主站蜘蛛池模板: 妺妺窝人体色WWW在线观看婚闹 | 又黄又大又粗又长又色 | AV无码一区二区三区在线观看 | 很很鲁在线播放97 | 久久嫩草精品久久久久 | 成人在线黄色视频网站 | 91精品国产91久久综合桃花 | 日韩精品无码高清视频看看 | 少妇又黄又粗又紧 | 日韩精品久久久久久免费 | 大 黄 爽 粗视频 | 亚洲色情在线免费观看 | AV无码一区二区三区在线观看 | 河南少妇BBB凸凸凸BBB | 欧美激情一区二区A片成人牛牛 | 成人做爰黄AA片免费看仙踪林 | 一区二区三区日本精品 | 亚洲免费观看高清完整版成人 | 精品无码久久久久久久久夜夜 | 亚洲无码ppypp | 五月天婷AVHD 一区二区三区四区 | 欧美操比比视频免费下载 | 黄色的网站免费在线观看 | 国产极品自拍视频在线观看 | 蜜桃AV鲁一鲁一鲁一鲁樱花影院 | 一级日韩一级欧美 | 1岁粉嫩小泬无无码在线观看套 | 国产成人精品人妻熟女a 6 2v久久 | 国产美女扒开小泬 | 国产无码精品人妻久久 | 东京热无码电影在线观看 | 久久久久久无码人妻一区 | 真人做爰A片免费观看茄子视频 | h0930老熟女系列 | 亚洲视频在线中文字幕 | 免费一看一级毛片 | 日韩精品字幕无码专区 | 少妇被又大又粗猛烈进出视频 | 97在线无码精品秘 入口竹菊 | 国产-无码-无套内射 | 国产一级黄色a片 |