Xu Xingguo said for a moment, wondering, "Has the exam been taken all at once? Professor Pang, have you learned all these courses yourself?"

Xi Pang Xuelin nodded with a smile and said, "It's about it."

课程 These courses listed by Xu Xingguo are basic courses for training a material science researcher. Pang Xuelin has spent more than 20 years in the wandering earth world. These basic professional knowledge has long been fused.

For him, such an exam is nothing at all.

Xu Xingguo hesitated for a moment, thinking of the level demonstrated by Pang Xuelin's design of the high-purity carbon nanotube preparation and characterization experiment, he said, "That line, Professor Pang, we have prepared a total of 22 different professional textbooks. My original The plan is for you to choose sixteen of them and take two days to complete the test. In that case, two days may not be enough. "

Pang Xuelin said: "Let me try it first, maybe it will be done in a day."

Xu Xingguo smiled, undeniably, they thought that Pang Xuelin was joking.

After all, even if a paper is finished as fast as half an hour, it has to be done for ten hours without eating or drinking.

Not to mention that during this period of time, you have to think constantly. The average person can't carry it at all. Pang Xuelin can finish it in two days, which is fast.

行 "OK, let's start!"

Xu Xingguo and several of them took Pang Xuelin to a small conference room and started to distribute papers.

The first is an organic chemistry test.

Various valence bond theories, molecular orbital theories, resonance theory; structural features, conformations, and chemical properties of alkanes, alkenes, alkynes, aromatic hydrocarbons, bridged rings; spectral analysis, infrared, ultraviolet, nuclear magnetic resonance, and mass spectrometry; organic molecular Various stereostructures, enantiomers, chiral molecules, mirror images, optical rotations, enantiomers, epimerisms, racemates, chirality ...

The exams at the undergraduate level are all the most basic things. These contents Pang Xuelin is already familiar with. He almost wrote the pen at the first glance and walked around. It took less than 20 minutes. This organic chemistry test paper He got it.

Li Jianbin took the examination papers and swept away from top to bottom.

Xu Xingguo asked, "Old Li, how's your answer?"

建 Li Jianbin said: "Basically there are no problems. Even if it is more strict, there are more than 90% of the deductions for some mistakes and missing answers."

Xu Xingguo they stunned.

Then, Pang Xuelin started to do the examination of inorganic chemistry. This time it was faster. It took 15 minutes!

Then, analytical chemistry, physical chemistry ...

It took only one hour and ten minutes to complete all the four basic chemistry topics. None of them scored below 90, and physical chemistry that favored theoretical calculations scored full marks.

"No wonder that Professor Pang is a genius? I thought he was just very talented in mathematics. I didn't expect that his learning ability was so great in other fields."

Chu Shilin aside, said with emotion.

建 Li Jianbin said: "It's true. Even if I can answer these papers myself, I won't necessarily get such a high score, let alone finish it in more than an hour."

Although Li Jianbin has finished the examination papers, Li Jianbin has no intention of leaving.

He would like to see if Pang Xuelin can do a miracle today.

Next, Pang Xuelin began to answer questions about polymer chemistry, materials chemistry, and solid chemistry by Professor Tao Hong.

These three examination papers, Pang Xuelin also completed all in just one hour, and none of them scored below 90.

The chemistry problem was almost done, and soon it was physics.

University Physics, Materials Physics, Materials Mechanics, Structural Mechanics.

Compared to those chemistry problems that need more memory and elaboration, physics problems that are based on calculations are simpler for Pang Xuelin.

Twenty-four examination papers were obtained within the same hour. Three of them were full marks, and one was a small mistake, and two points were deducted.

All of a sudden, everyone was convinced.

The outside world called Pang Xuelin as the **** of learning, and Xu Xingguo originally thought it was a bit exaggerated. Now it seems that this title really deserves it.

Seeing that Pang Xuelin had a bit of meaning, Xu Xingguo laughed and said, "Professor Pang, it's more than twelve noon now, or let's continue after dinner."

Pang Xuelin nodded and said, "OK, let's eat first."

After lunch, Xu Xingguo directly sent someone to the conference room for help. After spending half an hour eating, Pang Xuelin began to answer postgraduate exam questions.

结构 Material structure and properties, material thermodynamics and dynamics, field theory and tensor in materials science ...

Most of these papers are mainly answering questions. When Pang Xuelin did it, it was a bit slower than in the morning.

For example, on the questions of material thermodynamics and dynamics, one is to let Pang Xuelin describe the advantages and disadvantages of DSC curve and DTA curve and how to determine the enthalpy.

庞 This question Pang Xuelin spent nearly ten minutes writing a long paragraph.

[The main difference between the two methods of DTA and DSC is that DTA measures the temperature difference △ T between the sample and the reference, and DSC measures the heat flow rate (power difference) when the temperature difference between the sample and the reference is zero. dH / dt. Although the curve shapes and quantitative correction methods of the two are very similar, their principles and curve equations are different ...]

Uh ...

[Using an oxygen bomb calorimeter, the backside material burns at a constant volume, so Qv is measured, that is, ΔcUm. According to ΔcHm (B, T) = ΔcUm (B, T) + ΔpV. If regarded as an ideal gas ~ lightnovelpub.net ~ ignore the effect of pressure on ΔcHm (B, T), we get

ΔcHm (B, T) = ΔcUm (B, T) + ∑BνBRT

焓 The enthalpy value can be obtained by calculation. 】

Uh ...

But even so, these three papers only took Pang Xuelin an hour and a half.

In particular, tensor and field theory in materials science involve a large number of differential equations and partial differential equations, which require higher mathematical foundations, but for Pang Xuelin, this paper is the simplest.

In the end, Tensor and Field Theory Pang Xuelin directly scored the full score, and the other two papers were all above 90 points.

In the end, there are eight subjects left, which are the various knowledge points that need to be learned at the doctoral level.

Computational materials, crystal growth, solid-state phase transition and performance effects, dislocation theory and material strengthening, photonic materials science, energy materials science, semiconductor physics, and electron microscope applications in materials science ...

Fortunately, these papers are not large in quantity, and each paper is 20 minutes in average.

五 At 5:30 in the afternoon, Pang Xuelin completed the answer work for all subjects.

Xu Xingguo read the answer of the last paper and said to Li Jianbin and others: "What do you think?"

建 Li Jianbin smiled bitterly: "I can't use other words to describe it except to say a god."

Tao Hong nodded and said, "I've seen it today. Someone asked me who, who, how and how genius. I still can't believe that, while Professor Pang has achieved such great achievements in mathematics, he can also take care of other professional studies. I Only persuasion! Unfortunately, Professor Pang's main business is mathematics. If his main business is materials science, the achievements in the direction of materials may not be much worse than mathematics. "