We all use the refrigerator to store food to keep the freshness of the food and to prevent the food from spoiling. So how much is the temperature of the refrigerator adjusted? The correct temperature adjustment of the refrigerator can make the refrigerator more energy-saving and environmentally friendly, and it is also conducive to the storage of food. After the fruit is bought, it should be eaten fresh and eaten quickly. However, modern people tend to be too busy to buy foods frequently, such as apples, oranges and pears should be placed in the refrigerator to maintain the life of the fruit by keeping it cold.
The best way to store perishable food is to place the original packaging in a refrigerator at a temperature below 5 °C. According to the official food waste consultant, “Taking this simple step will increase the lifespan of many foods by three days.†The supermarket has issued a new labeling guide, recommending the use of the “small refrigerator†logo on the packaging and “below 5°C†The words "stored in the refrigerator". Supermarket staff believe this will serve as a way to keep reminding families to keep their refrigerators cold enough. If people can ensure the correct temperature of a domestic refrigerator and store the right food in the refrigerator, then the food can add an average of three days of life, saving the family 280 million pounds a year.
Experts say: This measure, along with other measures to simplify food labeling, can reduce food waste by 350,000 tons per year by 2025, saving consumers £1 billion. About 2 million tons of food a year, worth 5.6 billion pounds, was wasted because it was not used in time. Encourage food companies and help them label the food with the correct date stamps to guide people to the most important role in reducing the consumption of food.
CEO Marcus Gover said: “Tell people how long it takes to open a product and provide consistent and simple information about storage and freezing that will help people save longer Food," said FSA Chairman Heather Hancock, the new guidance will reduce food waste without compromising food safety. â€
Educational projectors are mainly aimed at classroom teaching by school teachers; traditional projectors are not easy to carry. Due to the naughty students in school classrooms, projectors are not safe to place in classrooms and are easily damaged by students. The portability of educational micro-projectors makes up for teaching Vacancy, it is convenient for teachers to give lectures and only need to store the materials in the projector and show them to students for teaching, saving the trouble of textbooks and handwriting with pens and chalks. Its general weight will not exceed 0.2Kg, and some do not even need fan cooling or ultra-small silent fan cooling.
Educational projectors need to have:
1. Clear handwriting Educational projectors most often display text and images, at least a resolution of 1024*768 or more, and a contrast ratio of more than 3000 lumens, so that students in the back row can see the projection clearly
2. Short-focus large screen;
3. Accurate color;
4. Easy operation;
5. Features such as multiple connection methods.
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