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
A: decreased
B: increased
C: fixed
D: closed
举一反三
- 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 two stroke diesel engine exhaust temperature will be lower than a four stroke diesel engine of the same displacement because the _____. ① MEP is lower and the scavenging air is cooling the exhaust gases ② valve overlap in a four stroke A.① B.② C.① and ② D.Neither ① nor ② is correct
- The needle valve in a fuel valve will （） when the fuel pressure action on the needle valve tapered face exerts a force lower than that of the spring compression.
- ______can cause oil flow from water outlet of the oil purifier. A: Oil inlet valve opening too quickly B: Oil temperature little higher than normal C: Diameter of gravity disc too small D: Viscosity of oil little lower than normal
- 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