As the temperature of an air mass decreases,the().
A、absolute humidity decreases
B、relative humidity increases
C、specific humidity decreases
D、dew point rises
A、absolute humidity decreases
B、relative humidity increases
C、specific humidity decreases
D、dew point rises
A、decreases as temperature increases B、increases with the temperature C、is not affected by temperature D、may increase or decrease as the temperature rises
A、A.more than the working temperature B、B.less than the working temperature C、C.the working temperature D、D.the same as the surrounding temperature
A、Heat is always transferred at a constant rate B、Heat transfer rate increases as temperature difference increases C、The rate of heat transfer is not affected by temperature difference D、The high temperature region is known as a heat sink
A、Viscosity will increase as temperature increases B、Viscosity is a measure of a fluid s internal resistance to flow C、Viscosity will decrease as temperature decreases D、Viscosity is not dependent on temperature
A、higher than the first stage feed-water temperature and absolute shell pressure B、lower than the first stage feed-water temperature and absolute shell pressure C、the same as the first stage feed-water temperature and absolute shell pressure D、not related to the feed-water temperature and absolute shell pressure
A、chilled water temperature B、dew point temperature C、primary air temperature D、dry bulb temperature
A、Because the piston is exposed to very high temperature, it must be cooled B、The lower the piston cooling temperature is, the better it is C、Both water and lube oil can be used as coolant D、One of the piston cooling methods is vibration cooling, with better effect