How much pressure does refrigerator add refrigerant to be commonly excuse me

How much pressure does refrigerator add refrigerant to be commonly excuse me

Generally only look at the low-pressure pressure, add refrigerant, just start is 0.5kg, and then always open the refrigerator, until the refrigerator to our set temperature, low pressure will show about 0.2kg. There is a phenomenon can determine the amount of snow in the refrigerator, that is, let the refrigerator run without shutdown, feel the low pressure of the compressor when the refrigerator is very cold

How much refrigerant does refrigerator need?

The refrigerator refrigerant is matched according to the refrigerator system, generally around 50g, which depends on the volume of the refrigerator and the refrigeration needs. There is the refrigerant filling weight on the refrigerator nameplate

How often should refrigerators be filled with refrigerant?

The pipes of the refrigerator system are closed, and the refrigerant stays in the closed pipes, so unless there is a leak in your refrigerator pipe system that needs to be repaired, there is no need to add refrigerant, and so is the air conditioner

Find y = x ^ 2 (2-5x) (0

Mean inequality
√ab≤(a+b)/2
A + B must be constant
Here, (1 / 4) x ^ 4 + (2-5x) ^ 2 is not a fixed value

If the length of a machine part is 2 mm and the length drawn on the drawing is 4 cm, the scale of the drawing is ()
Please write down the specific steps and ideas

2 mm = 0.2 cm
The scale is: 4:0.2 = 20:1

One dollar quadratic
（2a-1）^2=0
（2x-5)^2=9
4x^2-(x-1)^2=0
Using factorization method to solve equation: (2x-1) (3x + 4) = 2x-1
It is known that one root of the quadratic equation (x-a) (2x-3) = 6 is x = 0. Find the value of a and the other root of the equation

（2a-1）^2=0
2a-1 =0
a =1/2
（2x-5)^2=9
2x-5 = plus or minus 3
When 2x-5 = 3, x = 4
When 2x-5 = - 3, x = 1
So, x = 4 or x = 1
4x^2-(x-1)^2=0
(2x+x-1)(2x-x+1)=0
(3x-1)(x+1)=0
So, when 3x-1 = 0, x = 1 / 3
When x + 1 = 0, x = - 1
So, x = 1 / 3 or x = - 1
（2x-1）(3x+4)=2x-1
（2x-1）(3x+4) - (2x-1) =0
(2x-1)(3x+4-1)=0
(2x-1)(3x+3)=0
So, when 2x-1 = 0, x = 1 / 2
When 3x + 3 = 0, x = - 1
So, x = 1 / 2 or x = - 1
Substituting x = 0 into equation: (0-A) (2 × 0-3) = 6
3a=6
a=2
So: (X-2) (2x-3) = 6
2x²-7x+6=6
x(2x-7)=0
One root is 0
The other root is 2x-7 = 0
x=7/2

How to calculate the meter of the fabric according to its weight
I've worked in a garment factory recently, but I don't know anything about it. Thank you. I'm often cheated when I feed. What should I pay attention to?
If cloth comes by weight, how can I calculate the meter per kilogram? Someone told me that I can get the meter per kilogram (9600 divided by width and gram weight), but I don't think it's right. There are too many holes in Bree from Guangzhou. Some of them are 5-6 in a roll, and some of them are incomplete. The cloth here says 24.5kg, and I also give the money according to this weight, But I came back to weigh it. It's less than 1.5kg, plus 1.5kg paper tube. What's more, you said I was cheated
How to calculate the cost? How to calculate the cost of a piece of clothing materials? Originally, the profit is not big. Wrong calculation is not just in vain. You have to lose money
What should I do? I'm so anxious!

Knitwear is calculated by kilogram. I don't know what kind of fabric you are. This method should be woven well
Gram weight is to cut a 10x10cm square, weigh the weight, and then multiply it by 100 to get the gram weight. The unit is gram. (there are also special measuring instruments for gram weight). With gram weight, you can measure the width of the fabric. Divide the gram weight by 1000, and divide the width by 1kg meters

As shown in the figure, the rectangle is divided into six squares of different sizes. Given that the area of the small square in the middle is 4cm2, the area of the rectangle is 4cm2______  cm2．

Let the side length of the following small square be x cm, as shown in the figure, according to the equality of the opposite sides of the rectangle, we can get: (x + 2) + X + x = (x + 4) + (x + 6), & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 3x + 2 = 2x + 10, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 8; the length of the large rectangle is 3 × 8 + 2 = 26 (CM), and the width is 8 × 2 + 4 + 2 = 22 & nbsp; (CM), the area is 26 × 22 = 572 (cm 2); answer: the area of a rectangle is 572cm2

Among the 26 capital English letters, some of them can be regarded as axisymmetric figures, and they have a common character______ One is an axisymmetric figure

Among the 26 capital English letters, a, B, C, D, e, h, I, K, m, O, t, u, V, W, X and y can be regarded as axisymmetric figures. Therefore, there are 16 axisymmetric figures

What is the floor area of a cubic wooden box with a length of 3 meters? What is the floor space?

The floor area is 3 * 3 = 9 square meters
The space is 3 * 3 * 3 = 27 cubic meters