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.
So far, there's no evidence that it has the planes or the capability to launch airstrikes deep into Pakistan.
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第六十六条 煽动、策划非法集会、游行、示威，不听劝阻的，处十日以上十五日以下拘留。