The humidifier's valve of air-conditioner should be____, when the temperature is 5-8℃ in the winter.
A: decreased
B: increased
C: fixed
D: closed
A: decreased
B: increased
C: fixed
D: closed
举一反三
- The opening of the humidifier’s valve of air-conditioner should be ____, when temperature is lower than 0℃. A: decreased B: increased C: fixed D: closed
- The air-conditioner is running in the winter and to be stopped, we should（） 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 second
- Rewrite the following sentences with " be true of ." In winter, people in Shanghai use air conditioner to keep warm. people of Hunan use air conditioner, too.
- The assembly line significantly _________the assembly time per vehicle and _______the profit margin. A: decreased; increased B: increased; decreased C: increased；increased D: decreased；decreased
- Do you mind ________? A: to turn up the air conditioner B: turn up the air conditioner C: turning up the air conditioner D: to turning up the air conditioner