Dream of red mansions with high marks The more detailed the better The number of words is the best way for me to make a speech

Dream of red mansions with high marks The more detailed the better The number of words is the best way for me to make a speech

The young ladies and gentlemen of the Grand View Garden, after they started the club in Haitang and had their first fight with Qingxin, Shi Xiangyun was the host. According to Xue Baochai's intention, they invited Jia Mu and others to watch the sweet scented osmanthus in ouxiangxie and hold a crab feast. Then they wrote chrysanthemum Poems and chanted crabs This is the 38th chapter of a dream of Red Mansions

The 41st appreciation of dream of Red Mansions

The eighth chapter of the dream of Red Mansions
The eighth chapter of dream of Red Mansions

Focus on the following descriptions:
1. "Oh, I'm here by accident!"
2. Daiyu kowtowed melon seeds and only chuckled
3. "Thanks for listening to him. I don't know what I'm talking to you. If he says it, it's faster than the imperial edict!"

A cuboid, 5 cm longer, becomes a cube, and its surface area increases by 160 square cm. What is the volume of this cuboid______ Cubic centimeter

The width and height of the original cuboid are: 160 ／ 4 ／ 5 = 8 (CM), the length of the original cuboid is: 8-5 = (CM), 3 × 8 × 8 = 192 (cm3), answer: the volume of the original cuboid is 192 cm3. So the answer is: 192

9.11.12.12 calculate 24 points
That's 24

11 × 12 - 9 × 12＝24

X = cos ^ 3 t y = ACOS ^ 3 curvature

x=cos³t
y=acos³t
Curve equation
y=ax
This is a straight line, so the curvature is zero

For objects immersed in liquid, know buoyancy and liquid density, how to calculate object density?

We can only calculate the volume of the object, not the density of the object
Different objects of equal volume are all immersed in the liquid, and the buoyancy is equal

A triangular packing box, its bottom is an equilateral triangle with a side length of 10 cm, and its three sides are rectangular. Now it will be wider
Cut a 15 cm rectangular paper bag amcn into a parallelogram ABCD, and then use the parallelogram tape to wrap and paste the side of the triangular prism packaging box. It is required that there is no overlapping part of the tape, and the tape is wound three times on the side, (1) calculate the cutting angle ∠ bad (2) calculate the length of the rectangular paper bag needed to pack the triangular prism packaging paper

(1) If the width of the paper tape is an, then an = 15cm, so sin ∠ bad = an / ad = 1 / 2, so ∠ bad = 30 ° (2) because the paper tape is wound three times on the side, the side of the triangular box is fully covered, so it is necessary to wrap the triangular paper

Point P moves on the curve y = x ^ 3-x + 2 / 3. Let the inclination angle of the tangent at point p be a, and find the range of a (specific process!)
π/2）∪【3/4π，π）

For y, y '= 3x ^ 2-1,
x^2>=0,
So y '> = - 1
tan a>=-1
Because 0

Concrete slump: what are the slump of C10 C15 C20 C25 C30 C35 self mixing concrete and commercial concrete respectively?

Self mixing concrete C10 C15 is 3-5; C20 C25 C30 C35 is 7-9
Commercial concrete C10 has no regulation, C15 C20 C25 C30 C35 is 18 ± 2