What to do if there is a power outage

This video describes what to do in case there is a power outage

ที่มา : https://www.youtube.com/watch?v=fWa0o_QreKA

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National Grid’s job is to connect people to the energy they use, safely. We are at the heart of one of the greatest challenges facing our society – delivering clean energy to support our world long into the future.

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