Fang Huai's words were very modest.

But the smile on his face, no matter how you look at it, has another meaning - I'm just modest.

The religious staff did indeed mean a bit condescending to Fang Huai's lesson just now, and everyone is an old man in the army, so they will not fail to hear it.

However, Jin Guotao, as the captain of the district, saw that Fang Huai's face seemed to be displeased, and he still persuaded with a big brother mentality:

"The religious professional class is really good, the thinking is also very advanced, I heard that the American fire model is very researched, there are many classes, usually we want to ask him questions, he is not necessarily free... It's a good thing that he's willing to talk to you more. ”

Yang Tao immediately agreed: "Yes, the religious staff has a strong theoretical ability, and he has also worked in the local area, and we have all benefited a lot from what he said...... It's just a little arrogant, likes to train people, and engages in academics, all like this. ”

Fang Huai smiled noncommittally.

A bit arrogant?

If I were willing to share the authorship of the project with him, he would be able to smile at me right away.

"Okay, don't worry, just say a few words about me, I'm not so stingy...... However, I hope that the religious staff will not be stingy for a while. ”

Fang Huai's words made Jin Guotao frown again.

"Fang Huai, if you have an opinion, don't contradict the instructor, don't worry, if he really targets you repeatedly, I will definitely react with the team."

He is the captain of the district, although he can't understand the contradiction between Fang Huai and the instructor, but Fang Huai must be very big, and he is also a little uncertain about Fang Huai's character.

It is his job to maintain teaching discipline.

The student brigade and the teaching affairs are two sets of management systems, and the students must respect the teacher, of course, if the teacher has a problem, he also has the right to respond upward.

However, the level of teachers is generally high, and students must not conflict with teachers, which is discipline and the concept of superiors and subordinates.

Fang Huai touched his head, and he didn't want Jin Guotao to be embarrassed, and said:

"Don't worry, I won't target him."

The people around me were a little confused.

Boy.

There is a backstage, and the speech is different.

You won't target him?

If the religious staff heard this, they would be angry, right?

Jin Guotao and Yang Tao both wanted to remind Fang Huai that this is a student from the national team, and he is not good for his reputation if he confronts the instructor here, no matter what the relationship is.

"Fang Huai, you..."

Jin Guotao spoke again, but Fang Huai's eyes flashed, as if he thought of something, raised his hand, stopped him from talking, and then took a pen and wrote and drew on a piece of paper.

It's like painting a floor.

When everyone saw him like this, they had to leave in a huff.

A three-and-a-half-story building, with windows, doors, and exhaust vents, slowly took shape under his pen...

After drawing, Fang Huai looked at the paper a little sluggishly.

After a while, Fang Huai raised his head, exhaled a long breath, and slowly grasped it in his hand, pinching the piece of paper tightly, and then tightening.

There was remorse in his eyes, and some tears flowed up.

"I should have changed, I should have changed, brother..."

…

The religious staff chatted with several teachers, and when they re-entered the classroom, they blew hot teacups with a smile on their faces.

The other instructors didn't come in, they just stood at the door together, glanced at the last row where Fang Huai was sitting, and left.

Fang Huai's eyes saw all this keenly, but his mentality had changed a little from just now.

In his eyes, there was more solemnity.

If he just exchanged knowledge just now and just didn't want anyone to disturb his plan, plus some battles of will related to face, then now, his mind is completely focused on another issue.

Wrong tactical thinking will cost many people.

Jin Guotao was about to stand up, but the religious officer had already spoken.

"No need to ask, let's continue with what we just said, gating technology."

The religious staff did have a bit of the vigorous and resolute momentum of a soldier, and quickly erased the blackboard.

Some people below panicked, the things in the book were not detailed, this lesson was jerky, there were no notes, and I really didn't understand it when I reviewed.

"Teacher! Don't rub it! I haven't finished copying it yet! ”

The religious clerk did not stop moving, wiped the board book, and said as he wrote:

"Note-taking is a matter in class, and you were given ten minutes, what are you doing? Find other classmates to copy. ”

Speaking, "Fire Attack - Gating Assist Technology" has been written.

"Gated control, as the name suggests, control of doors."

The religious clerk turned and looked at everyone:

"Please listen attentively, and I'll ask questions by name in a moment."

When he said this, the religious staff glanced at Fang Huai, intentionally or unintentionally.

The other students didn't stop looking at him, some of them were already laughing, they just felt that this newcomer was too unlucky, I don't know if it was the menstrual period of the man who met the religious staff, why did he keep calling him?

Jin Guotao hurriedly glanced at Fang Huai with some warning.

Fang Huai just looked serious and stared at the religious staff intently.

The religious staff found Fang Huai's direct gaze and felt the shock of the previous class, at least Fang Huai stopped staring at the book by himself, but listened to him carefully, and the corners of his mouth raised a smile again.

"Based on the content of the previous lecture, we have completed the fire reconnaissance and assessment, obtained a limited internal situation, and the next action is to attack outside and attack.

External attack is usually more risky, because the internal environment of the fire is unknown, it is likely that because of the water shooting, the internal balance is broken, a large amount of steam is generated, and the living environment of the trapped people may be deteriorated, so it is often necessary to give priority to the external attack when the fire has reached the outside and is relatively turbulent, otherwise, the outside is generally treated by cooling the wall and isolating the fire.

Both external and internal attacks must be arranged differently according to the trapped personnel, and we will talk about this next, but the first step is to open the door.

How to open the door is the key for our firefighters to enter the fire, even if it is through the window, the top of the broken entry, the firefighters must arrive at the door as soon as possible, for the teammates to open the equipment, hose to enter.

Breaking down the gate, I won't talk about it, this is the practical content.

I'm just going to talk about the door of a fire, what information exists, and what you should do in front of the door.

First of all, the temperature of the fire ground.

To determine whether the fire has reached the vicinity of the door, first test it with gloves, and if the fire is large, feel the proximity of the body.

If you don't feel it, you can use the back of your hand to test it, and remember that the back of your hand will naturally retract when you are stimulated.

Secondly, the door control technology, which is a relatively new concept in Western fire protection, is in the exploration stage, I have learned some fire fighting ideas in Hong Kong, including this door control. ”

The religious man said, not without pride.

"The neutral surface of the fire field we mentioned before is the principle of existence of this technology, who will say what the neutral surface of the fire field is?"

The religious clerk finally revisited this important concept, but in the form of a question.

"Fang..."

He just said a word.

"Report!"

Jin Guotao quickly raised his hand and reported loudly, without giving him a chance to ask Fang Huai.

The religious officer was stunned for a moment, then turned his head and raised his hand:

"Okay, come on."

Jin Guotao was not too ready, and he was a little stumbling:

"Neutral... Refers to the inside of the fire... A... That is, the interface that does not enter the air and does not exhaust! ”

"Hmm... Not accurately, it is not a fire field, but a closed fire field, or in a building, the interface where hot and cold air meet is called a neutral surface, with a layer of hot smoke above and a layer of cold air below. ”

The religious officer shook his head, looked at Fang Huai again, and said:

"Fang Huai, do you know the meaning of the neutral side?"

Here we go again, here we go again.

Everyone's eyes looked at Fang Huai.

This time, almost all of them sensed that the religious staff was on the wrong hand.

In fact, the religious staff is only planning to embarrass Fang Huai one last time.

In this way, if Fang Huai was unwilling to let them guide, he would proudly say in front of the leader in the future: "This kid's theory is really average, I once asked him three questions in class, and he couldn't answer any of them." ”

Chinese like "three", once or twice may be a coincidence, three times, it has a summary meaning.

This is the third time he has been asked a question.

But this time, Fang Huai wouldn't give him any more chances.

The figure of 1.82 meters stood up, and his posture was very upright.

The voice of the voice is no longer looking for the answer in the temptation, and the words are much firmer than just now.

"Report! The neutral surface of the fire field is a concept proposed by the International Fire Academy IFSTA, which is a concept derived from the principle of thermal stratification, natural plane, which is literally translated as natural plane.

In the case of a building fire, due to the proportional relationship between air pressure and temperature, thick smoke will be discharged from any window, and when the hot smoke reaches the back of the window and is discharged to the outside, it will go up, and cold air will enter the lower edge of the window to supply the fire.

It has a lot of significance.

First, escape, artificially make neutral surfaces.

We know that the high temperature and poisonous smoke in the fire are all in the smoke layer, and most people in the fire are not burned to death, but suffocated and smoked, and the high temperature and smoke in the smoke layer are full of danger.

The wet towel we have been advertising to cover the eyes, ears, nose and mouth is actually wrong, because in the process of wetting the towel, the escape time has been wasted, and it is not effective in blocking carbon monoxide and smoke and toxic gases.

Therefore, the escape method to effectively increase the probability of survival and reduce the harm of smoke to the human body is to artificially create a neutral surface in addition to low-posture escape.

If the trapped person picks up a sheet, curtain cloth, blanket, etc., raises his hands high, puts the sheet above the head, and bends the upper body of the trapped person to create an artificial neutral belt, so that the head is under the neutral belt, the smoke will run up from the sheet behind the trapped person, so that the trapped person can avoid the invasion of thick smoke, and can even reduce the probability of burning people by the high heat attached to the smoke.

Second, judge the internal fire.

The neutral zone is usually located 10 cm above the bottom of the smoke layer, and the observation of the neutral zone is actually observing the development of the smoke layer and the fire situation, and obvious information can be obtained from the height of the neutral zone.

The smoke is produced by combustion, so when entering the fire scene, the neutral zone is high and the smoke is thin, indicating that the fire is in the initial stage, and the lower it is, the more dangerous it is, and back-ignition or deflagration may occur; If the flue gas layer rises sharply and the thickness of the flue gas decreases, the ventilation conditions have improved, and if it decreases sharply, it means that there has been a deflagration inside, and the smoke has filled the entire room.

According to the latest research, when the smoke layer drops to about 1 meter above the ground, the fire is close to ignition.

At this time, you can't rush into the fire.

Third, control the flue gas layer.

Entering the fire site, the risk of ignition and back-ignition can be firmly controlled by spraying water into the flue gas layer to cool down, and with the flue gas layer height standard.

Fourth, as the religious staff said in the last lesson, the location of the fire point is determined by the flow of smoke.

Report, done. ”

Fang Huai's words fell, and the surroundings were very quiet.

The sound of flipping books.

I don't think there's such a page, huh?

Isn't the "neutral side" explained in the book just a principle?

The religious staff was a little surprised and wanted to say something, but Fang Huai said it very comprehensively, and there was a "1-meter blast line", which he didn't even know where to study.

Nowadays, international fire protection is still in the research and development stage of "neutral aspects", not to mention China, where the fire protection industry started very late, and it is only mentioned in the teaching book.

"Guy, for the data, you have to be rigorous, your one-meter smoke layer is burning at a height, who is researching?" The religious officer frowned slightly.

Fang Huai noodles do not change color.

"Teacher, the information of foreign firefighting, not only Hong Kong training can be obtained, I asked my family to help me subscribe to dozens of the latest magazines, in addition, I also go online, this data, Australian firefighter Shan Raffel of cfbt-au network, and American firefighter Ed Hartin of cfbt-us network have mentioned."

As soon as these words came out, the air became quieter.

the groove.

the groove.

Brother, if you remember the data, you will remember the data, and you will also remember the names of people?

Dozens of foreign magazines... Are you done?

It's not Playboy again!

The religious staff felt bad in their hearts at this time.

He felt that he was probably underestimating this No. 1.

In fact, if it weren't for the theory, whether it was the national arena or the practical operation of the squadron reform, or the plan that the leader thought he cared about, any achievement made by this No. 1 would be beyond his reach in his life.

Now, Fang Huai can still name a lot of data and sources at will, and when he has the ability to debate with him theoretically, that sense of oppression comes to his face.

He decided to try the water again.

"Then do you know how to judge the height of the internal neutral plane before opening the door?"

This is what he will talk about next, and this is not a book, but a new American method.

He wanted to verify the truth of what Fang Huai had just said.

Fang Huai chuckled lightly and asked rhetorically:

"Teacher, this is the "gating technology" you want to talk about today?"

The religious clerk was stunned for a moment when asked.

The people around him only felt that the aura of this "No. 1" was getting higher and higher, and they turned their heads one after another to observe him again.

"Of course it's not all, if you want to know, answer my question first."

The religious staff hated this kind of rhetorical question, and their expressions were a little cold.

Fang Huai didn't bother to play dumb riddles with him again, and said:

"This method is very simple, just spray the whole door through the flowering water stream, pay attention to the lowest position of the water vapor rise, and the part above the neutral layer, the door is high.

Unfortunately, this method is only suitable for doors with a flue gas layer and parts behind the door, such as wooden doors, where the heat is not conducted to the outside, so this method is not applicable. ”

There was an abrupt "oh" sound in the classroom.

That's it.

The religious staff was a little embarrassed.

However, he still said with a strong aura: "The door control technology is still in the development stage, and gradually cooperate with the internal attack, of course, the practicality is not limited to this, the door, is the most commonly used import and export of personnel and equipment, and it is also the most important channel for escape.

Comrade Fang Huai, there is no end to learning, about the door control technology, you are so frivolous, it means that you still know little, I hope you have a correct attitude and study hard.

Next, let's talk about the meaning of gating and the equipment required. ”

The religious clerk didn't want him to speak, so he turned the page back from the book on the pulpit, ready to talk about the importance of gating and respond to his frivolity.

However, Fang Huai did not sit down.

Then came the voice, loud and thunderous.

"Teacher, gating is very important, even more important than the layout of the water gun.

But that exercise should be taught by the coach on the training ground, not you.

Moreover, this is not really gated at all!

The real gating is the flue gas control theory corresponding to the gating!

Moreover, I think that the teaching should be stopped immediately, because I have a comrade-in-arms who has died because of this. ”

(End of chapter)