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1. Alcohol thermometer, because the freezing point of mercury is -39, and the freezing point of kerosene is that in cold areas, the temperature may be too low to solidify mercury and kerosene, and normal temperature measurement cannot be carried out.
Whereas, the freezing point of alcohol is -114.
2. Bimetal thermometer, it is a field detection instrument for measuring medium and low temperatures. The temperature of liquids, vapours and gaseous media in the range of -80 to +500 in various production processes can be directly measured. The main component of the industrial bimetal thermometer is a multi-layer metal sheet composed of two or more metal sheets stacked together, which works on the principle that two different metals have different degrees of expansion when the temperature changes.
It is composed of bimetal sheets that are wound into a circular curved shape. When one end is heated and expanded, the pointer is rotated, and the working instrument displays the temperature value corresponding to the thermoelectric potential.
3. Mercury thermometer, in the case of standard air pressure, the melting point of mercury is -39, it is solid at -40, solid or liquid at -39, or solid-liquid coexistence
All three of the above are acceptable.
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Measure the corresponding freezer, place a thermometer in the freezer compartment and a refrigerator compartment, and set the refrigerator temperature controller to the lowest and highest settings.
3。Note that the temperature measurement range of the freezer thermometer must reach -30 degrees Celsius1, the temperature of the refrigerator.
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This is because the temperature distribution is uneven everywhere in the refrigerator, since the temperature is displayed, it proves that you are a computer refrigerator, and the temperature measurement points of the computer refrigerator are generally only 1-2 in the refrigerator.
The closer to the back of the refrigerator, the lower the temperature, and the closer to the door, the higher the temperature.
If there is a fan inside the refrigerator to promote convection, the temperature will be relatively even.
1. The refrigerator is a tool to provide food preservation, and the freshness temperature required for different foods is different, so the temperature of the refrigerator should be set according to the type of food stored. For example, green leafy vegetables 12 degrees, tropical fruits 10 degrees, cooked food 8 degrees, beer drinks 4 degrees, fresh meat -18 degrees, fish and shrimp 0 degrees, etc., in principle, there is no relationship with the season.
2. The temperature range of the refrigerator freezer is -4 -24 degrees (three-star -18 degrees, four-star -24 degrees), and the temperature range of the refrigerator is 5 15 degrees. When the mechanical thermostat is adjusted, the freezer and refrigerator temperatures change at the same time.
3. When the ambient temperature is higher than 30 degrees in summer, the set temperature should be adjusted higher to prevent the compressor from not stopping, resulting in serious freezing in the refrigerator, which is to sacrifice the function of the refrigerator to ensure the normal use of the refrigerator.
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The display board of the refrigerator is broken, I inquire about this situation, will it affect the freezing and refrigeration of the refrigerator?
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The display temperature is a little different from the actual temperature, which is normal, the refrigeration is normal, and the machine can be started and shut down normally.
That's it, why be so precise, if you want to be accurate, the refrigerator can only start and maintain the temperature frequently, which is why the manufacturer designs to change the temperature only once in a few minutes, it is not with the temperature changes, the display also changes, and you can only say that there is a problem with the sensor.
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The landlord still directly calls the after-sales **, let the door-to-door monitoring.
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Summary. Hello, do you want to ask if the temperature of the refrigerator is different from the temperature of the freezer?
The temperature of the freezer compartment of a refrigerator is -19 and the temperature of the refrigerator compartment is 4, you can calculate the temperature of the refrigerator compartment.
Hello, do you want to ask if the temperature of the refrigerator is different from the temperature of the freezer?
Yes. The temperature of the refrigerator is 4+19=23 degrees higher than that of the freezer.
So what's the process?
So what's the process?
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1. The room temperature is 25 degrees Celsius.
2. The temperature inside the refrigerator is between 5 and 10 degrees Celsius.
3. The temperature rise of the beverage gradually slows down.
4. The heating process lasted for about 50 minutes.
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Usually different models of temperature control, the cold spot temperature of the 3 gears is also slightly different, the basic gear is the common median gear, generally in the ambient temperature 25 is the temperature of the refrigerator room is 3 5, frozen below -17.
The temperature of the refrigerator room is between +0-10°, and 4°C all year round can ensure that the ingredients have a very good preservation effect. 0° is the extreme biological preservation of Mingyanfan, and the preservation effect is the best. The refrigerator compartment of the general brand refrigerator does not reach a temperature that is infinitely close to 0, and only a minimum of 2.
Precautions for refrigerator use.
Food placed in the refrigerator must be clean and clean. Wash and drain fruits, vegetables and other raw foods before putting them in. Raw fish, chickens and ducks should be offal and washed before putting them in the refrigerator.
Minimize the time and frequency of opening the refrigerator door to reduce the entry of external hot air. The author understands that food should not be stored in the refrigerator for more than five to seven days, and if the food is found to be moldy, rotten and smelly, it should not be eaten again.
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The refrigerator stool is 3 degrees Celsius in the refrigerator room, which can be recorded as +3 °C in Zao Town, and the freezer is 8 degrees Celsius before the sub-zero trip, which should be recorded as -8 °C;
So the answer is: +3, -8
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a. Normal body temperature.
Around 37, fever.
The state can reach 40, so a is realistic;
b. The temperature of the refrigerator freezer is lower than that of the ear hand 0, and the age is about -18, so B is in line with reality;
c. The temperature of the refrigerator is about 5, so C is in line with reality;
d. Orange juice with ice is a mixture of ice water.
The temperature is around 0, so d is not realistic
Therefore, choose D
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Answer C analysis: The temperature infiltration of the original Dan is -5, and the increase is 4, and the real model is converted into an addition operation of rational numbers
Answer: -5+4
Therefore, choose C Comment: This question mainly examines the addition operation of abstracting rational numbers from practical problems
Yes: minus 18
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Turn off the power and blow it with a hot air with a hair dryer, and the thick ice will fall off quickly, so don't shovel hard. After the first ice, plug in the power supply and let the ice room start to cool. According to the size of the ice room, cut a quick transparent plastic film dipped in water, paste it on the wall of the ice room, and then load things, the next time the ice is first frozen, open the ice room door for a short time, the ice is on the plastic film, as long as the plastic film is lightly pulled, the ice of the refrigerator will naturally fall off, and the de-icing is very, very easy.