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What kind of refrigerant is used for air conditioner and refrigerator
In fact, different refrigerants are also related to the production process. For example, the production process standards of R600a and R134 refrigerants for refrigerators are different. The refrigerants for air conditioners and refrigerators are also different. The refrigerants for refrigerators and refrigerators are also different. Each kind of refrigerant has its own label name, which means that
What kind of refrigerant does refrigerator use?
It's not Freon
1, the correct ones in the calculation are () a A2 + B3 = 2a5 B A4 △ a = A4 C A2 &; A4 = A8 D (- A2) 3 = - A6
If so, it is the cube of a square of D = - A to the sixth power
In the right triangle ABC, the angle ABC = 90 degrees, take AB as the diameter, make the circle O, intersect AC at point D, and E as the midpoint of BC, connect De, and find the tangent between de and circle?
Connecting od because BDC = 180-adb = 90 ° the triangle BDC is a right triangle, so BDE = DBE 0b = OD, and 0bd = ODB because 0bd + DBE = 90 ° ODB + BDE = 90
If 1 / 3 of a is equal to 2 times of B, then a: B = (:)
If 1 / 3 of a is equal to 2 times of B, then a: B = (6:1)
The playground of experimental primary school is 170m long and 60m wide. On the plan with the scale of 1:500, what is the ratio of the area on the plan to the actual area?
Actual area = 170 × 60 = 10200 square meters = 102000000 square centimeters
170 M = 17000 cm, 60 m = 6000 cm
Length = 17000 × 1 / 500 = 34cm
Width = 6000 × 1 / 500 = 12 cm
Area on the map = 34 × 12 = 408 square centimeter
The ratio of the area on the graph to the actual area is = 408:102000000 = 1:250000
If the degree of the interior angle of the obtuse triangle ABC satisfies B = a - θ = C + θ, and the ratio of the maximum side length to the minimum side length is m, then the range of M is
A
B=A-θ
C=A-2θ
A + B + C = a + (a - θ) + (A-2 θ) = 3a-3 θ = 180 degrees
A - θ = 60 degrees
m>2
Given a = 3x square, y-4xy square, B = - x square, y-2xy square, and a + 2B + C = 0, find the polynomial C. find the value of C when x = - half, y = - 1
∵A=3X²Y-4XY²,B=-X²Y-2XY²A+2B+C=0∴C=-A-2B=-(3x²y-4xy²)+2(x²y+2xy²)=-x²y+8xy²=xy(8y-x)∵x=-1/2,y=-1∴C=1/2(-8+1/2)=-15/4
Xiao Ming is 150 cm tall and Xiao Hong is 120 cm tall
（150-120）/150
What are the capillary phenomena in life?
The absorption of water by plants is a capillary phenomenon
When building a house, there are many and fine capillaries in the compacted foundation, which will lead up the moisture in the soil and make the room moist
When planting crops, in order to preserve the underground water, we should hoe the soil on the ground and destroy the capillaries on the surface of the soil to reduce the evaporation of water
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