The air-conditioner is running in the winter and t...
单选题

The air-conditioner is running in the winter and to be stopped, we should()

发布日期:2021-03-22

A.close Fan and Humidifier at the same time

B.firstly close Fan and then close humidifier immediately

C.firstly close humidifier and then close Fan immediately

D.firstly close humidifier and then close Fan after 30 seconds

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