Ptt 大爆卦 | ASHRAE COVID-19 - 前往 https://facilityexecutive.com/2021/04/ashrae-cdc-released-updated-covid-19-guidance-this-week/

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ASHRAE, CDC Released Updated COVID-19 Guidance This ...

ASHRAE Epidemic Task Force updated its airborne transmission guidance on virus. And, CDC provided update on surface transmission for ...

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