Group 1 - The meteorological department predicts significant fluctuations in temperature this winter, with frequent cold waves and increased safety risks related to household electricity, gas, and heating [1] - The use of high-power electric appliances such as electric heaters and electric blankets will rise, leading to an increased risk of fire, necessitating heightened safety precautions [1] - Consumers are advised to look for the "3C" mark on heating products, which indicates compliance with national safety standards [1] Group 2 - When using household gas, it is crucial to check for safety hazards, especially in winter when kitchens are often sealed, leading to insufficient oxygen supply and potential carbon monoxide poisoning [3] - The color of the flame from gas appliances can indicate proper combustion; a blue flame signifies normal operation, while yellow or red flames indicate incomplete combustion, requiring immediate ventilation [3] - Many energy-saving products may not be compatible with gas appliances, potentially causing damage; users should contact gas companies for inspections if issues arise [3] Group 3 - In the event of a fire, it is essential to assess the situation quickly within the first minute, determining the fire's size and type of materials burning [4] - If the fire exceeds the size of an A4 paper or is not controlled within a minute, individuals should abandon attempts to extinguish it and call for help, providing clear information about the fire [4] - Residents should follow safety protocols, such as checking the temperature of doors before opening and sealing off rooms to delay the spread of fire and smoke while waiting for assistance [4]

Core Viewpoint - The article emphasizes the increased safety risks associated with the use of electricity, gas, and fire during the winter season in China, highlighting the importance of safety measures and awareness to prevent accidents and ensure safe usage of heating appliances and gas systems [1][2][3]. Group 1: Electrical Safety - The use of high-power electrical appliances like electric heaters and electric blankets increases during winter, raising fire risks, thus safety precautions must be prioritized [1]. - When purchasing heating devices, consumers should look for the "3C" mark, which indicates compliance with national safety standards, and ensure that products have essential safety features such as "overheat protection" and "automatic shut-off" [1]. - Past incidents have shown that placing flammable materials on electric heaters can lead to fires, underscoring the need for careful usage and distance from combustible items [1]. Group 2: Gas Safety - In winter, kitchens are often sealed, leading to insufficient oxygen supply, which can cause incomplete combustion of gas and result in carbon monoxide poisoning [2]. - The color of the flame from gas appliances can indicate safety; a blue flame signifies proper combustion, while yellow or red flames indicate incomplete burning, necessitating immediate ventilation [2]. - Many so-called energy-saving products may not be compatible with gas appliances, potentially causing damage or safety hazards, thus regular checks by gas companies are recommended [2]. Group 3: Fire Emergency Response - Winter is a peak season for fires, and in case of a fire, a systematic approach of "judge, report, extinguish, evacuate" should be followed [3]. - The first minute after a fire starts is critical for assessment; if the fire exceeds the size of an A4 paper or is not controlled within that time, evacuation and alerting authorities is essential [3]. - In case of a fire in a residential building, residents should rely on sensory cues like door temperature and smoke to determine safety, and if necessary, stay put and seal off the area while waiting for rescue [3].