mark candidate[n] as used
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.
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- Allow the user to specify the color of the icon and the color of the background (both hex and RGB)
，详情可参考im钱包官方下载
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