为什么要用水盾来灭火?这是利用气压改变火焰方向来保护消防员。 #科普 #解压 #消防员 #物理 | 8k8 com log in | Updated: 2024-07-27 09:24:22
MEXICO CITY - Mexico's National Electoral Institute announced on Sunday the results of its preliminary vote count in the largest elections in the country's history, putting Claudia Sheinbaum in the lead as Mexico's next president.