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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."。业内人士推荐旺商聊官方下载作为进阶阅读
。关于这个话题，Line官方版本下载提供了深入分析
* @param {number[]} speed 每辆车的速度数组（英里/小时），详情可参考safew官方版本下载
Елизавета Гринберг (редактор)