Please write down the Chinese meaning of Hb, CD, BBC, P and NBA emergency

HB
abbr.
Heavy barrel
CD
Compact disc
[Computer] DOS command, used to modify the current directory, can also be written as chdir
BBC
n.
bbc
NBA
=Narrow band allocation
American Professional Basketball League

RELATED INFORMATIONS

1. The sum of the numerator and denominator of a fraction is 25. If you add 5 to the numerator, it equals 1. What is the fraction Please
2. (a square + b square - 3) (a square + b square) - 10 = 0 a square + b square equals
3. It is known that ad is the middle line of △ ABC, AE ⊥ AB, AF ⊥ AC, and AE = AB, AF = AC are connected with EF, and ad = 1 / 2ef is verified
4. It is known that in △ ABC, ad, be and CF are bisectors of three internal angles and intersect with point O, og ⊥ BC, and the perpendicular foot is g
5. As shown in the figure, a seedling shed with width a = 6m, height B = 2.5m, and length d = 10m, the area of plastic film covered on the slope of the shed is______ m2．
6. If the sum of two triangles is equal to the meter shape, the circle is equal to the sum of two squares, and the triangle is equal to the sum of four circles, what is the meter shape △ square
7. Four triangles plus a circle = 24, two circles add up to four triangles, how many triangles and circles are each?
8. A triangle, a square and a circle are numbers from 1 to 9 respectively. May I ask △ =?; □ =?;, 0 =?
9. A math problem: triangle square = 2.8 square + circle = 9.2 triangle + circle = triangle + triangle + triangle, then three =? Positive =? Circle=
10. A mathematical problem, know help, two circles equal to three squares, a square plus two triangles equal to a circle First question: how many times the mass of a square is that of a triangle? Second question: how many times the mass of a circle is that of a triangle?
11. In △ ABC, ab = 7, AC = 24, BC = 25, then ∠ a=______ Degree
12. For a function in the form of y = ax + B / CX + D (C ≠ 0), the range of y = (3x-1) / (2x + 1) can be obtained by using inverse function method or separation constant method For functions of the form y = ax + B / CX + D (C ≠ 0), the inverse function method or the separation constant method is used Find the range of y = (3x-1) / (2x + 1) The range of y = x & # 178; - 2x-3 / X & # 178; - 3x-4
13. The range of the function f (x) = x Λ 2 + 2x, X ∈ [- 2,3] is ()
14. Let f (x) = 1 / x, G (x) = ax & # 178; + BX (a, B ∈ R, a ≠ 0) If the image of y = f (x) and the image of y = g (x) have and only have two different common points a (x1, Y1), B (X2, Y2), then the following judgment is correct x1+x2>0,y1+y2>0 x1+x2>0,y1+y2
15. Are numbers with different symbols but the same absolute value opposite? What about + 0? The teacher said that although - 0 and + 0 are opposite numbers, the sign can be omitted, so the answer is not this (this is a multiple choice question, I omitted other answers.)
16. Given a = 2x ^ 2 + 3xy-2x-1, B = - x ^ 2 + XY-1, 1. Find the value of 3A + 6B 2. The value of 3A + 6B has nothing to do with X, and the value of y can be obtained
17. Simple calculation of 302 * 24
18. On the slope of straight line and normal vector Given a direction vector V (3,7) of a straight line and the slope k = 7 / 3, find the normal vector of the straight line
19. In the plane rectangular coordinate system, if the symmetric point of point a (1-m, - M) about the origin is in the second quadrant, what is the value range of M?
20. If the solution set of inequality system 2x-1 ＞ 3 (x-1) x ＜ m is x ＜ 2, then the value range of M is