Magnesium nitride electronic type

In this way

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1. Help explain the formation and process of urine in detail
2. The process and illustration of urine formation
3. As shown in the figure is a sketch of the formation of urine: (1) in the figure, ② is______ (2) liquid (3) is______ The liquid is______ The difference between the two liquids is that the liquid does not contain______ (3) in a patient's urine test results, found more red blood cells. If it is kidney disease, you think it may be the mark in the picture______ There was a lesion
4. The structure of the original urine and urine is (on-line, etc.) in turn A glomerulus and tubule B corpuscle and nephron C renal vesicle and ureter D glomerulus and pelvis
5. The meaning of the difference between the purchase and sale of goods or some specific explanations and examples Is there any concrete example of the price difference between purchase and sale~ Please attach the definition of "price difference between purchase and sale of goods"
6. Who can help me explain the meaning of these four things? – Dielectric-dielectric – Dielectric-metal – Maxwell’s equations – Radiation
7. Try to explain that the algebraic formula (x + 1) (x + 2) (x + 3) (x + 4) + 1 is a complete square formula
8. Given that sina + cosa = m, Sina * cosa = n, then the relationship between M and N is?
9. Panda accountant of Senli fruit store found that the money was less than 100 yuan when he checked out. After checking, he found that a number on a receipt was polluted, which became ■ 52.72 yuan "At the beginning of the month, 72 people came to buy peaches. Each person bought the same amount of peaches and paid the same amount of money. I wrote a collection note to them collectively, which was accidentally soiled. The number of contaminated peaches was 1, and the sum was 152.72 yuan." Is the weasel right? Why? How much should the money be? Please make it clear
10. Someone swam the Yangtze River upstream and lost a kettle at a. he swam forward for another 20 minutes before he found out that he had lost the kettle. He immediately returned to search for it. How many minutes did it take him to return to search for it at a distance of 2 kilometers? (return speed unchanged)
11. The electronic form of magnesium nitride?
12. What's the electronic formula for magnesium nitride? It's electronic,
13. The number of electrons transferred from 0.1 mole of magnesium to MgO and mg3n 2 is 0.2 Na, right?
14. Fill in the blanks with the following questions about the formation of turpentine balls! Conditions of speculation: reasons for speculation: 1. It has to happen in summer 2. It has to happen in the pine forest 3. Spiders are about to pounce on flies 4. The resin should be dripped continuously It should be: fill in the blanks with the knowledge about the formation of turpentine balls!
15. Is amber a turpentine?
16. The area of a rectangular desktop is square meters. A square desktop is nine tenths of a meter long. How much more is the area of a rectangular desktop than that of a square desktop?
17. In the triangle ABC, a, B and C are the diagonals of side a, B and C respectively, and A-B = 4, a + C = 2B. The maximum angle is 120 degrees?
18. It is known that when △ ABC, ∠ ACB = 90 °, CE ⊥ AB is on e, D is a point on AB, and ad = AC, AF square ∠ CAE intersects CE on F, FD ∥ BC is proved
19. The square of one plus the square of two plus the square of three Plus the square of n equals?
20. The sum of the numerator and denominator of a fraction is 21. After the denominator is increased by 19, you can get the simplest fraction 1 / 4, and find the original number. Hurry, I have to hand it in this afternoon. Who will say it quickly