There are two main types of smoke alarm tech, says Raman Chagger, principal consultant at BRE, the Building Research Establishment. Ionisation-based systems use a tiny amount of radioactive material to charge, or ionise, particles in the air which flow between two small plates. Should smoke interrupt that flow of charged particles, the alarm goes off.
她也擔心日後可能發生討厭狗隻人士闖入寵物友善餐廳，對毛孩做出下毒等危害行為，因此申請許可的餐廳或需培訓店員如何應對。，这一点在91视频中也有详细论述
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