English vocabulary for quiet girls the more , the better

gentle and quiet
reserved
sedate

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1. Who can tell the difference between these English words? 1.ability 2.capability 3.capacity 4.competence Need a few sentences to explain, it's better to explain their differences in detail thank you!
2. To ask a question of higher numbers is related to the boundedness of functions It is proved that arctanx / 1 + x ^ 2 is a bounded function No idea at all
3. If the ice at 0 ℃ is melted into water at 0 ℃, its volume will be reduced. Comparing the internal energy of this ice at 0 ℃ with that of the melted water, the following statement is correct A. They have the same internal energy B. Ice at 0 ℃ has larger internal energy C. Water at 0 ℃ has higher internal energy D. Not sure
4. The domain of sin α, cos α and Tan α?
5. 100 is equal to 100
6. Let f (x) = log2 (2x-3) be defined as set M. let g (x) = 1-log under the root sign. Let the logarithm of 2 be defined as set n. find m intersection n m union n
7. What's 77 times 4?
8. Let log4 X - (1 / 4) ^ x = 0 and the roots of log4 X - (1 / 4) ^ x = 0 be X1 and X2 respectively A 0 The second is Log1 / 4 x - (1 / 4) ^ x = 0
9. Division with remainder, quotient is 14, remainder is 6. Given that the sum of divisor and divisor is 126, what are the divisor and divisor respectively There should be a formula
10. Find the general solution of the differential equation y '' - 6y '+ 8y = Xe to the power of 2x
11. Given that K is an integer, the solution of the equation (k-99) x = 111-100x is also the value of K
12. I have a lot of work to do tomorrow How to distinguish job from work?
13. a> 0, Let f (x) = [(2010x + 1 + 2009) / (2010x + 1)] + SiNx (x belongs to [- A, a]) with the maximum value of M and the minimum value of N, and find m + n =? a> 0, Let f (x) = {[2010 ^ (x + 1) + 2009] / (2010 ^ x) + 1} + SiNx (x belongs to [- A, a]) with the maximum value of M and the minimum value of N, and find m + n =? Why am I 4019? The answer is 4020,
14. Students travel and rent a boat. If there are ten people in one boat, there will be two more seats. If there are two people in one boat, there will be one less boat. How many boats do you want to rent?
15. The plural form of roof believe chief
16. Mother said he would not go home for dinner tonight
17. How much is 1-1000
18. One meter equals 10 decimeters, one meter equals 100 centimeters, one meter equals 1000 millimeters, one decimeter equals 10 centimeters equals 100 millimeters, and one centimeter equals 10 millimeters
19. What is 1000 * 10 ^ n + 1
20. How much RMB is 1300 yen