Jia Mao Zhang, I offer you a chance to Xia Di more than...

As we all know, hydrogen-powered vehicles are the ultimate ground power tool that is clean, efficient and pollution-free. Why do you say that it is not suitable for the development of hydrogen-powered vehicles at this stage? Liu Shiqing didn't look down on this classmate with a strong local accent because of Yu Shengmin's wild words.

Yu Shengmin took the initiative to sign up for this freshman English performance competition, for which he also deliberately collected a lot of information, and in the process of collecting, he became interested in hydrogen-powered vehicles. He concluded that "it is not easy to develop hydrogen-powered vehicles at this stage", which is not untargeted, but after careful consideration.

"Hydrogen-powered vehicles are indeed a non-polluting car, which is the main reason why people eventually develop hydrogen-powered vehicles. But Liu Shiqing, do you know that it is used as a fuel for hydrogen-powered vehicles?

How is hydrogen produced? I would like to tell you that the industrial hydrogen production methods currently used all over the world have a very serious environmental pollution problem.

For example, the commonly used electrolysis of water to produce hydrogen is an example. The problem of pollution is very serious. Electrolyzer production, such as the extraction and processing of raw materials and the eventual disposal of waste or waste, consumes a certain amount of energy and releases other greenhouse gases and other pollutants.

For the alkaline electrolyzer, due to the use of a strongly corrosive liquid as the electrolyte, the leakage and post-use treatment will cause environmental pollution, which is also a threat to human health, and the current alkaline electrolyzer mostly uses asbestos as a separator, asbestos is carcinogenic, and will pose a serious danger to people.

The Koushu electrolyzer uses a proton exchange membrane as the electrolyte and does not require a diaphragm, but when the operating temperature of the electrolyzer is high, for example, the blade will decompose and produce toxic gases. Although the solid oxide electrolyzer does not have the above problems, it works at high temperatures, and there is a risk that the oxygen and hydrogen generated at high temperatures will recombine and burn or even explode.

In fact, I listed some of the environmental pollution that may be caused by the production of hydrogen from water electrolysis. Liu Shiqing. Don't you think that's a ridiculous paradox? We originally started to develop hydrogen-powered vehicles in order to reduce environmental pollution, but for the sake of this so-called pollution-free means of transportation, we had to develop some industries that are not harmful to the environment to produce hydrogen.

At this stage, if hydrogen-powered vehicles are developed on a large scale, the environmental problems arising from the industrial hydrogen production process are likely to be offset by the benefits brought by hydrogen-powered vehicles. It is not suitable for the large-scale development of hydrogen-powered vehicles until we find a means of non-polluting or light-polluting means to produce hydrogen by means of industrial production

Liu Shiqing did not rush to judge Yu Shengmin's words, he still needs to check some information to confirm whether Yu Shengmin's words are right or wrong, but Yu Shengmin can keep a relatively sober mind when the whole people applaud the hydrogen-powered car, Liu Shiqing still appreciates it very much, at least this matter can prove that Yu Shengmin is not a person. The master of the crowd has the will to think independently and take practical actions.

"So, do you think there is any value in the development of hydrogen-powered vehicles?" Liu Shiqing asked with a smile.

"Yes, of course, as long as we can find a way that is not harmful to the environment and is relatively cheap, we should still vigorously develop hydrogen-powered vehicles. In addition, the development of hydrogen-powered vehicles has to solve several major technical problems, but as far as hydrogen-powered vehicles themselves are concerned, the storage and safety of hydrogen; the low cost, efficiency and safety of hydrogen engines; There is also the cost of the whole vehicle, which is the three major technical difficulties, especially the storage of hydrogen is a crucial factor that plagues the development of hydrogen-powered vehicles. In addition, the low-cost, high-efficiency, pollution-free industrial hydrogen production and the popularity of hydrogen gas stations are also key factors restricting the development of hydrogen-powered vehicles. As long as these problems can be solved, hydrogen-powered vehicles still have a lot to offer. Yu Shengmin clenched his fists and waved, "Of the four in college, I decided to work with hydrogen-powered cars, and I hope to be able to use my own ideas to build a hydrogen-powered car." I'm sure I'll be able to do it

Liu Shiqing didn't know that when Yu Shengmin made up his mind to be admitted to Shuimu University, he had such an expression. He pondered for a moment and said, "Yu Shengmin, I heard that your family is not wealthy? ”

Yu Shengmin's originally shining face suddenly dimmed, it can be called a poor family background, which is a pain in his heart that cannot be erased, not to mention anything else, from the beginning of school to the present. He cooks in the school cafeteria, and he always picks the cheapest, not to mention the fried meat, and he has never even eaten egg drop once, and he only dares to eat seventy percent full every day. Although the school also applied for student loans for him, Yu Shengmin sent more than half of them home, Zhou Ji's parents and brothers, and more than half of the rest, which he used to buy learning materials, which was not enough at all.

Liu Shiyu knew what was going on, "Huisheng doesn't want to be diligent and thrifty?" A little bit of fear. Can I introduce you to a work-study opportunity? The money may not be much, only one or two thousand yuan a month, I don't know if you are willing to do it? ”

"Yes, of course I do." Yu Shengmin nodded again and again. After entering the school, he also applied for a work-study opportunity through the work-study guidance center of the school in Guò. The school also arranged several tutor interviews for him, but his accent was too strong. The parents of the students were not very satisfied, so it was not done.

Liu Shiqing called, called Mao Sixian out, and then said to Yu Shengmin: "You know Galaxy Performing Arts, right? This is Mao Sixian, the general manager of Galaxy Performing Arts, Mr. Mao, you just go to her to work and study, right? Aunt Mao, you arrange an easier job for Yu Shengmin. That's right, Yu Shengmin. In the past two years, lay your foundation, and wait for the establishment of the Yinhe Industrial High-tech Park, you can go there, and I will provide you with an opportunity to turn your ideals into reality. ”

Yu Shengmin was a little dizzy, he didn't understand half of Liu Shiqing's words, but he also knew that he had an opportunity to study on the job, and Liu Shiqing didn't seem to be simple.

Mao Sixian looked Yu Shengmin up and down. Yu Shengmin's image is really not good, his face is yellow and thin, even if he goes to a film and television drama or a trick on the stage, it will affect the audience's mood. However, Mao Sixian didn't dare to underestimate Yu Shengmin. The bad guy is also a student at Mizuki University, and after graduation, he definitely doesn't have to worry about finding a good job.

"That's it, Yu Shengmin, since Mr. Liu asked me to arrange an easier job for you, and we happen to have a warehouse caretaker there, you can do this errand, and give you 2,000 yuan a month, including board and lodging. What do you think? Mao Sixian said with a smile.

Yu Shengmin only felt as if he had been hit by a pie falling from the sky, and was overjoyed, "Thank you Liu Shiqing, thank you Mr. Mao." ”

Liu Shiqing also has to participate in the following competitions. Yu Shengmin's work-study was handed over to Mao Sixian, and he returned to the auditorium, waiting for his moment to play. When he and Yu Shengmin were talking outside, two more classmates finished their speeches, and they also scored a lot, and the highest one surpassed the Gu score.

The next few students, lacklustre, have nothing to praise. In the final analysis, the participants in this speech contest are a group of young people who have just left middle school life, and there are very few people who have cultivated their own scientific research ideas. The new proposition, that is, the demonic level of things

Finish.

The students who participated in the speech all took it as their goal to show off their English skills, and few of them worked the content of the speech. The judges were the same, and their focus was on the students' English proficiency, and they didn't care much about the content. This is probably the sadness of the Chinese academic and scientific research circles, these years, archaeology, ancient Chinese researchers, when evaluating professional titles, also take English proficiency as a standard of measurement, and I don't know what is the relationship between ancient Chinese and English, is ancient Chinese evolved from English?

Soon, more than two hours passed, and the freshman English speech contest of the School of Mechanical Engineering came to the end, and it was time for Liu Shiqing to take the stage. The name of the last person to take the stage was announced by the female cadre of the student union, with a smiling expression on her face, when she stepped off the stage and staggered with Liu Shiqing, the sister also seized the time to send a blessing to Liu Shiqing, "Liu Shiqing, the president has prepared a zero-point number plate, I am optimistic about you, come on." ”

There was a taste of schadenfreude in his words, which was basically to disturb Liu Shiqing's military morale before his formal speech. However, both the female cadre of the student union and Xiong Shaoqi underestimated Liu Shiqing. The tenacity of his mind. How could two ordinary students disturb it, even if Xiong Shaoqi was the president of the student union of the college.

Wei Donglin is also the vice principal of the school. When I saw him, I didn't have to be as polite as I was. How many levels are there between Xiong Shaoqi and Wei Donglin, Xiong Shaoqi may struggle all his life, but he can't climb to Wei Donglin's current position.

The moment Liu Shiqing took the stage, there was an exclamation from the audience. There is no way, the two costume designers and makeup artists of Galaxy Performing Arts have excavated all the advantages of Liu Shiqing's body shape and appearance, and turned an ordinary-looking young man into the No. 1 actor in youth idol dramas, and it is difficult not to attract people's attention.

Only then did Meng Jiaoen know that this handsome guy who was fascinated by them at the door of the auditorium turned out to be the squad leader Liu Shiqing. Meng Jiaoen was really bold enough to stand on the chair. "Class leader, come on, we are steam blades, and the whole class will support you."

Several other girls also shouted, "Squad leader, come on." If you want to know what will happen next, please log on to the speaker. There are more chapters, support the author, support genuine reading and reading the latest Children's Day on washing the stream book and drying the fine notch and throwing the umbrella