Rosanne almost didn't give everyone a moment with the pliers in her hand.

None of the two fools had a good time reflecting on themselves.

She took two steps forward and knocked on the ground in front of the squatting pit with pliers, "Genius, you two are really geniuses, and you know that oxalic acid is corrosive."

Song Tingchuan looked at the pliers in Luo Shan's hand, and took a step back silently, for fear that the dirty pliers head that was messing with garbage bags would accidentally get on him.

Roshan ""

Damn, it's not clean, and it's important to pay attention to it

glared at Song Tingchuan viciously, and Luo Shan sneered

"Come, the most powerful genius, let me tell you, the corrosiveness of oxalic acid is related to its concentration, in order to protect the safety of students, it is impossible for the school to give you a high concentration of oxalic acid, so what you have in your hands is diluted, and you want to corrode all of them with this concentration, why do you two want to spend the night here?"

Zhou Qian""

What the hell

So oxalic acid is useless at all

Zhou Qian screamed, "Brother Chuan, you pit me"

What a pit he wanted to know, as for now he will pit himself into it

Song Tingchuan had a headache and wanted to press the corner of his forehead, but thinking of the hand he had cleaned just now, he silently put it back again.

He looked at Roshan angrily, "Since it's all diluted, then you still want us to dilute it just now"

Ah, dare to talk back

Roseanne slammed the ground

"Diluting it only means reducing its danger, but it doesn't mean that you can use it directly to wash the toilet, and then dilute it Don't you know that such a strong oxalic acid, don't you feel uncomfortable staying in this environment, if it's not oxalic acid or hydrochloric acid used today, you two are going to go to the corpse toilet"

The volatile gas of hydrochloric acid is toxic, and if you want to change to hydrochloric acid to stay in such an environment, the two of them will suffer.

Zhou Qian""

cough cough, don't blame our local tyrant Zhou for being surprised, he didn't study chemistry well in junior high school, and his current cultural level is a little better than that of primary school students.

Illiteracy can't afford to hurt.

Zhou Qian turned his head, and was about to ask Song Tingchuan again why he kept bullying him for being illiterate, but before he could open his mouth, he heard a familiar female voice in his ear

"What's going on"

Looking back, Ma Dan was really Su Nan again

I'm really embarrassed, in addition to the female labor commissioner, there is also the female discipline inspection committee in charge of health inspection

What a coincidence, Su Nan is on duty again today.

Song Tingchuan""

Zhou Qian""

After class at 12 o'clock, the cleaning is generally half an hour, and the Discipline Inspection Committee should start from 12:40 to inspect each classroom, and score each class according to the corresponding situation.

And Song Tingchuan and Zhou Qian, the two idiots, tossed around blindly for half an hour, and when Luo Shan usually appeared, it was definitely the final check before the Discipline Inspection Commission came.

As a result, as soon as I came in, I was angry with these two people, and I just remembered to train people, and I forgot to let the two of them hurry up.

Seeing Su Nan coming, Luo Shan knew that their class would definitely be deducted points this time

Su Nan is so iron-faced, selfless, upright, and he doesn't know it, expecting Su Nan to put water on the face of his class, it is absolutely impossible.

Roseanne stomped her foot in anger.

She has been a labor commissioner for so many years, and she has never let her class be deducted points, and she is there every semester when the school health evaluation allows the labor commissioner to come to the stage to receive the award, and now

Anyway, it was irretrievable, and Luo Shan didn't bother to give face to the two, in front of Su Nan and the partner next to her, it was a pour of beans.

Su Nan's face is getting more and more ugly, but the partner next to her is so happy that he can't straighten his waist, if it weren't for Su Nan's support, he might have laughed.

Song Tingchuan""

Zhou Qian""

Laugh laugh, laugh what laugh

Sure enough, the partner of the good girl King Kong Barbie is as annoying as her