Half an hour later, Zhang Hao took the car driven by Liu Feng to the garage of the Municipal Traffic Management Bureau again. Pen & Fun & Pavilion www.biquge.info this time is different from the last time, because this time it is in the daytime, the vision is wider, and of course, there are more people than last time.

When Liu Feng led Zhang Hao into the hall of the Municipal Traffic Management Bureau, a beautiful and cute girl walked up and said, "Liu Feng, why did you go early in the morning?" People are looking for you, and who is this? ”

Liu Feng seemed to have a great headache with the girl in front of him, he frowned, and then became very impatient: "Dai Mengmeng, I don't need to report to you where I go, and don't forget that I am your boss." If you have something to talk about later, I'm busy with my friends right now, you get out of the way. ”

"Willow Wind...... You ......" Dai Mengmeng never thought that Liu Feng would murder her in front of so many colleagues, and now she suddenly felt infinite grievances, tears were rolling in her eyes, and they could fall at any time.

Although Zhang Hao on the side didn't know what the relationship between Dai Mengmeng and Liu Feng was in front of him, he felt that it was definitely not the relationship between ordinary subordinates and bosses, but when he saw that Dai Mengmeng was about to cry, he stood up: "Ah Feng, someone is a girl, don't kill someone at every turn, you are a big man, and you are the captain here, so the impact is not good, look at it, everyone else is looking at us now." ”

Liu Feng glanced around, and sure enough, many colleagues were looking at them, and he couldn't help but feel embarrassed: "But ......"

"Okay, don't do anything, don't we have something to do? Let's go. After speaking, Zhang Hao took the lead in leaving the hall. He had already memorized the route to the garage in his mind the last time he came.

After looking at the back of his brother leaving, and then at Dai Mengmeng in front of him, Liu Feng apologized, and took out a pack of tissues from his pocket and handed it over: "I'm sorry." I'm really in a hurry right now, so we'll talk about it later. ”

After speaking, Liu Feng hurriedly went to chase Zhang Hao.

Looking at Zhang Hao and Liu Feng, who were leaving, Dai Mengmeng wiped the tears in his eyes with the tissue given by Liu Feng, and thought: Who is that young man? Why did Liu Feng seem to listen to him? No, I'm going to have to find out what the hell the hell the hell the two of them are up to.

Looking at the blue Santana taxi in front of him, which had already been faced once, Zhang Hao's expression became more and more serious, and Liu Feng on the side was also affected, standing silently on the side.

Zhang Hao approached the taxi that remained as it was after being hit, then reconfirmed, then turned to Liu Feng and said, "Ah Feng, now I will solve the mystery of the bizarre acceleration to you." ”

"The mystery of bizarre acceleration? What is that? Suddenly, a girl's crisp and sweet voice sounded from Zhang Hao and Liu Feng.

"Huh? Dai Mengmeng! Seeing the visitor, Liu Feng couldn't help but be taken aback, and then frowned.

"Hehe, Miss Dai. How did you get here? Zhang Hao said with a smile.

"I'm here to see what the hell you're doing, and don't call me Miss Dai, call me Xiaomeng or Dai Mengmeng." Looking at the strange young man in front of him, Dai Mengmeng said, "By the way, what's your name?" ”

"Hehe, Xiaomeng, my name is Zhang Hao."

"By the way, what's that bizarre acceleration mystery you just talked about?" Dai Mengmeng looked at Liu Feng and Zhang Hao curiously.

Liu Feng just twisted his head in the face of Dai Mengmeng's curious eyes and shifted his gaze to other places. When Zhang Hao saw it, he smiled helplessly, and then he told Liu Jianbo and Zhu Zijian's case in detail, and even the doubts and reasoning did not fall.

"Huh? It turned out to be that case? I happened to be resting yesterday, so I also heard from my colleague, so it seems that it was really a well-planned murder? Dai Mengmeng was a little shocked.

"Well, after an in-depth investigation by me and Ah Feng, it can already be determined, and now we are here to find out how the murderer made the driverless taxi accelerate." Zhang Hao explained.

"How is this possible, how can a person make an unmanned taxi suddenly accelerate, unless he has superpowers." Dai Mengmeng still didn't believe anyone could do this.

"Dai Mengmeng, don't talk nonsense, how can there really be superpowers in this world, don't disturb Ah Hao's train of thought." Liu Feng on the side couldn't stand Dai Mengmeng's nosy personality for a long time.

"Ah Feng, Xiaomeng wanted to know what was going on, so we told her, and it won't have any effect anyway." Zhang Hao suggested to Liu Feng.

"Well, well, then it's up to you." Liu Feng was extremely depressed.

Zhang Hao looked at Liu Feng and Dai Mengmeng, and after confirming that they would not quarrel, he began his reasoning: "The murderer doesn't have any superpowers as Xiaomeng said, but he has a super IQ." Ah Feng, you have also read Ah Rong's air test report. ”

"Well, when he gave it to me, I saw it, and the carbon dioxide in the car was obviously exceeded, not 0.03% in the atmosphere, but 0.046%."

That's right, that's the key to solving the mystery of getting driverless taxis to accelerate. Tell me, what else can carbon dioxide be called? ”

"Dry ice?!" Dai Mengmeng and Liu Feng said in unison.

Then, the two of them glanced at each other, and for a short moment, they turned their heads again, like two angry children.

Looking at the appearance of the two of them, Zhang Hao smiled, and then continued: "Hehe, that's right, it's dry ice." Dry ice is solid carbon dioxide, which condenses carbon dioxide into a colorless liquid at room temperature and pressure of 6079.8 kPa, and then rapidly evaporates at low pressure to condense into a piece of compacted ice-like solid substance, the temperature of which is minus 78.6 °C, which is dry ice. ”

"And the murderer used the effect of dry ice to suddenly accelerate the driverless taxi."

"That'...... How did the murderer do it? Dai Mengmeng asked.

"Before the murderer escaped from the taxi, he had already put two pieces of dry ice pressed on the clutch and accelerator under his feet, and Liu Jianbo did not pay attention to the driver's feet from the time he got into the car.

"When the murderer was about to escape from the taxi, he pressed the dry ice that had been placed under his feet in advance against the clutch and the accelerator respectively, and Liu Jianbo should have been asleep at that time, so he didn't find it. After holding it down, he left the taxi as fast as he could, and at that moment, the taxi suddenly accelerated, and even if no one was driving, it was still able to accelerate because of the dry ice. ”

"The reason why there was no trace of dry ice was found afterwards was because the doors were open at that time, coupled with the speed of 140 km/h at that time, the atmospheric pressure outside was greater than that in the car, and the dry ice slowly sublimated into carbon dioxide because of the atmospheric pressure."

"No wonder the amount of carbon dioxide in the car is 0.016% higher than the amount of carbon dioxide in the atmosphere." Willow Wind interrupted.

"Well, the murderer used the principle of dry ice sublimation to create the mystery of the sudden acceleration of the driverless taxi, I only found out when I went into the car to check at that time, because the car was a little humid at that time, because the dry ice sublimated into carbon dioxide."

"Huh? Doesn't it say that carbon dioxide causes the greenhouse effect? The car shouldn't be wet, it should be warmer than the outside. Dai Mengmeng said.

"You idiot, when the carbon dioxide content exceeds 0.05%, it will cause the greenhouse effect." Glancing at Dai Mengmeng, Liu Feng said lightly.

"You're an idiot, you're smart! If you're smart, why can't you see the suspicions that Zhang Hao can see? Hum. Dai Mengmeng replied unconvinced.

"Why can't I see that? I just saw that there was something suspicious about this accident, so I looked for Ah Hao, don't talk nonsense if you don't understand! Liu Feng was not to be outdone, as if he must be better than Dai Mengmeng.

"Alright, alright, can I ask you two to stop? You're all in your twenties, so you're still like a child, and you're not ashamed. Zhang Hao became a peacemaker again, "Ah Feng, now let's go and take a look at the camera in the Lianyun Tunnel, maybe we can find something." ”

"Okay. Don't come with me, or I'll transfer you." The latter sentence was said by Liu Feng to Dai Mengmeng.

Sure enough, after hearing Liu Feng's words, Dai Mengmeng instantly became quieter, and then left the garage silently.