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The tests used in standards for evaluating smoke alarms were developed back in the 1980s. However, despite changes in building materials since then, smoke alarms remain reliable, says Chagger: "They still respond to all the main fires we get today."
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Falling volcanic ash has for years been viewed as a nuisance. But a Sicilian project has discovered its agricultural potential and wants to spread the word
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越是宏伟事业，越要集智聚力。从深入基层一线开展专题调研，到召开座谈会广泛听取建议，再到网络征求意见活动收到有效建言311.3万余条……“十五五”规划编制中坚持开门问策、问计于民，彰显全过程人民民主的显著优势，凝聚乘势而上开新局的强大合力。