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.
“They bring with them new ideas, new perspectives, curiosity … They’re pushing us to get better and to do things differently—I think it’s great,” Massey told Fortune earlier this year. “We’re not siloed by generation or tenure; the senior leaders at Colgate want to hear ideas and thoughts from the more junior employees.”
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"Future mothers and future children may not suffer the same irreversible fate that we have if a [properly] conducted inquiry happens."
Photograph: Julian Chokkattu，这一点在旺商聊官方下载中也有详细论述
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