novelraw Chapter 635
Chapter 635
Fortunately, I caught the exam in time.
She glared at Yunwei. She must give full play to this exam. She will never let Yunwei take the lead. Only in this way can she retaliate for this revenge.
Tomorrow night Leng glanced at Yunwei and said, "well, start the exam."
Yunwei glanced. There were ten students, including herself, three men and seven women. Sure enough, do women love jewelry more?
As for what Lisa Fang is doing, she doesn't know very well. Anyway, Lisa Fang didn't show up here for the exam, did she?
Cold tomorrow night stood in front of everyone.
He has an awe inspiring momentum, and his body has a cold air, showing indifference.
He waved and two plates of things were sent immediately.
These two plates of things are covered with brocade cloth. I don't know what is covered under them.
We don't know what to take in the exam, and we can't help looking at those two things.
Tomorrow night said coldly, "today's test content is very simple. Here are one plate of glass fragments and one plate of broken diamonds. I'm going to mix them together soon. All you have to do is distinguish glass from broken diamonds. "
When we heard this, we suddenly had some convulsions on our faces.
This exam is a little too simple, isn't it? Not all the people who come here to study have been exposed to jewelry, and who didn't come to school with testing instruments?
The molecular structures of glass and diamond are completely different, so it is very convenient to test with testing instruments.
There is nothing difficult to distinguish broken glass from broken drill. Just take out the instrument, put the broken glass and broken drill in, test it, and you can distinguish it immediately.
Even Lisa Fang, who doesn't understand jewelry at all, knows this truth.
It seems to see everyone's thoughts. The cold lips of tomorrow night pull up an upward arc: "you can't use instruments, and you can't take out broken diamonds and broken glass. It can only be distinguished here by what exists here. "
He shrugged and said, "I don't know what's in this conference room. Just find anything you need, as long as it's in this room."
Suddenly, everyone began to cry and look sad. No tools can be used. How can we distinguish?
Isn't it obvious to be difficult?
If there are tools, it is not difficult for the people present. The tester is the most convenient and fast tool.
Yunwei also thought to herself, "if you can't use the detector, people here must have a way to distinguish broken glass from broken drill. It's very simple. You only need to use the method of heavy liquid separation. 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 and stir repeatedly. The minerals with high density sink and the small ones float up. The density of glass is about 2.5 and the density of diamond is about 3.5, which is easy to distinguish. "
But tomorrow night Leng said that he could not go out, nor could he use everything except here, and heavy liquid is obviously an industrial chemical, which must be absent here.
Obviously, no one can solve this problem with instruments and heavy liquid separation.
Suddenly, ten people were a little dumbfounded.
Tomorrow night Leng looks at Yunwei impatiently. In order to embarrass Yunwei, he drives her out directly. He doesn't think less.