The heat preservation work in the greenhouse can be completed by side insulation and top insulation curtain, as well as internal and external sunshade curtain and top skylight. The heat preservation work can be carried out 2 hours before sunset. Close the top skylight 2 hours before sunset, expand the internal heat preservation, and then gradually expand the internal sunshade and side insulation. All the internal heat preservation, inner sunshade and side heat preservation will be carried out before sunset. If necessary, external shading can also be fully carried out for thermal insulation. When the external solar radiation is less than 300W/m2 (blade stomata closed) and need heat preservation, you can directly turn on internal heat preservation, side heat preservation and internal shading, and close the top skylight at the same time.
Greenhouse management: first, we should do a good job of anti-freezing. Freezable flowers can be equipped with an inner film in the greenhouse to form a two-layer film for heat preservation, and heating can also be carried out in the greenhouse if possible. Second, it is necessary to do a good job in strengthening the greenhouse. On snowy days, when there is snow in the greenhouse, we should remove the snow from the roof in time, increase the light transmission, prevent the greenhouse from being crushed by the snow, and reduce the freezing low temperature after the snow melts. When clearing the snow, you should avoid piercing the greenhouse film and transport the snow out of the nursery. The greenhouse with collapse and collapse deformation should be strengthened and repaired immediately, and if it cannot be repaired, the plants in the shed should be transferred in time, or covered with film, grass curtain or sunshade net to improve the heat preservation effect.
A part of the diaphragm is coated with a transparent reflective film, and the image and data on the dashboard transmitted from the projector can be displayed on the diaphragm as needed, which is convenient for the driver to observe, and the driver does not need to look down at the instrument when driving. The image shows that if the intelligent glass cooperates with the infrared image display system, the driver can see clearly the objects around the 2km in front of him on a foggy day. The photoelectric sunshade roof glass can automatically absorb, accumulate and use solar energy to drive the car fan when the car is driving or parking, and it can also continuously recharge the car battery.
At the event site, volunteers consciously stuck to their posts and listened to the unified arrangements of the propaganda Department of the County Party Committee, the Youth League County Party Committee and the Youth Volunteer Association, wearing masks, red waistcoats and ribbons emblazoned with Dancheng Associated Society to help maintain order around the examination room. free cooling supplies such as bottled mineral water, paper, hand folding fans and towels are provided for college entrance examination candidates and accompanying parents. At the same time, sunshade tents, chairs and tables are placed at the service point to accompany parents to rest. During the waiting period, young volunteers take the initiative to communicate with the parents of examinees, by popularizing financial knowledge such as illegal fund-raising and telecommunications fraud, so as to alleviate the tension and anxiety of parents in hot weather and provide them with a comfortable environment for accompanying exams.
Xin Test Standard has long carried out automotive functional testing (automotive seats, internal and external accessories (door panels, dashboards, sub-dashboards, sunshades, bumpers, evaporators, etc.), automotive wiring harness and lights, chassis and transmission, hose pulse), automotive prohibited substances testing, volatile organic compounds VOCs testing, polymer material testing, metal material testing, environmental reliability testing, automotive electronics and other testing business.
