Chapter 635

Fortunately, I caught the exam in time.

She glared at Yunwei. In this exam, she must make good use of it. She will never let Yunwei take the lead. Only in this way can she retaliate against this revenge.

Tomorrow night, she glanced at Yunwei and said, "OK, start the exam."

Yunwei glanced at her, including herself, a total of ten students, three men and seven women. Is it true that women love jewelry more?

As for what Fang Lisa came to do, she didn't know very well. Anyway, she didn't come here to take the exam?

Tomorrow night cold stood in front of everyone.

He was awe inspiring, with a cold air in his body, showing indifference.

He waved, and immediately two dishes were served.

These two plates are covered with brocade cloth. I don't know what's under it.

We don't know what the exam is going to take. We can't help looking at the two sets.

Tomorrow night, he said coldly, "today's test content is very simple, here is a plate of glass fragments, there is a broken diamond. I'm going to mix them up, and all you have to do is separate the glass from the diamond

When you hear this, you suddenly have convulsions in your face.

This test is too simple, isn't it? The people who come here to study, who have not been exposed to jewelry, who did not bring detection equipment to school?

The molecular structures of glass and diamond are completely different, so it is very convenient to test them with detection instruments.

If you want to distinguish broken glass and broken drill, there is nothing difficult at all. You just need to take out the instrument, put the broken glass and broken drill in, test it, and you can distinguish it immediately.

Even Fang Lisa, who doesn't know jewelry at all, knows this truth.

It seems to be to see everyone's ideas, the cold lip corner of the next night involves an upward arc: "you can't use instruments, you can't take the broken drill and broken glass out. It can only be distinguished here by what is available here. "

He shrugged and said, "I don't know what's in this room. Just look for anything you need, anything in this room."

All of a sudden, everyone began to cry, what tools can not help, then how to distinguish ah?

Isn't it obvious to be difficult?

If there are tools, it is not difficult for all of you. The detector is the most convenient and fast tool.

Yunwei also secretly thought, "if you can't use a detector, people here must have a way to distinguish broken glass from broken drill. It's very simple. You just need to use heavy liquid separation method. The so-called heavy liquid separation method is a method of mineral separation in a certain density of heavy liquid according to different mineral density. Pour the heavy liquid into the separating funnel, put in the sand sample, stir repeatedly, and the mineral with high density will sink and the small one will float up. The density of diamond is about 2.5, which is easy to distinguish

But tomorrow night Leng said that he could not go out and could not rely on everything except here. Heavy liquid is obviously an industrial chemical substance, which is definitely not available here.

Obviously, no one can solve this problem with instruments and heavy liquid separation.

All of a sudden, ten people are a little dumb.

Tomorrow night Leng looks at Yunwei impatiently. In order to embarrass Yunwei, he drives her out directly. He doesn't think less.