午夜小片|一级电影中文字幕|国产三级一区|精品久久久久久久国产性色av,国产一级黄色网,久久久久久久久久福利,久草超碰

Three robot firefighters produced by HIT Robot Group are inspected by staff members at the fire brigade department of Beijing Economic-Technological Development Area (BDA) on Nov 15. The fire-fighting robots can spray water columns up to 100 meters, climb slopes, and avoid obstacles, as well as carry out complex fire-fighting and rescue operations. The robot firefighters have successfully passed technical assessments and are ready for fire-fighting operations. [Photo/kfqgw.beijing.gov.cn]