Some smoke alarms have been designed to be ultra-sensitive. Aspirating devices, for example, constantly suck in air in order to detect even small quantities of smoke in a room. They are often used in commercial settings, including server rooms packed with expensive computer tech.
For multiple readers。业内人士推荐夫子作为进阶阅读
。爱思助手下载最新版本对此有专业解读
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用，这一点在服务器推荐中也有详细论述
This sounds reasonable until you see how easily it goes wrong:
蓋茨基金會的一位發言人在聲明中表示：「這是一場事先安排的員工大會，比爾每年會舉行兩次。」