Фото: Arafat Barbakh / Reuters
Subscribe to Corrado
。业内人士推荐91视频作为进阶阅读
Continue reading...
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."