As the temperature for a given mass of air increases, the ______.A.dew point increasesB.dew point decreasesC.relative humidity increasesD.relative humidity decreases
As the temperature for a given mass of air increases, the ______.
A.dew point increases
B.dew point decreases
C.relative humidity increases
D.relative humidity decreases
相关考题：
Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?A.Cooling the air to a temperature just above dew pointB.Heating the air to a point at which moisture will boil off ,then re-cooling itC.Cooling the air to a point below dew point, then reheating itD.Heating the air and then cooling it to a point below dew point
As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperatures will ______.A.increaseB.decreaseC.remain unchangedD.be greatest at dew point
Temperature and moisture characteristics are modified in a warm or cold air mass due to ______.A.pressure changes in the air massB.movement of the air massC.the heterogeneous nature of the air massD.upper level atmospheric changes
Hygroscopic cargoes should be ventilated when ______.A.going from a warm to a cold climateB.the dew point of the outside air is greater than the dew point of the air in the holdC.the dew point of the air in the hold is very lowD.the outside dew point is 16°C and the cargo temperature is 12°C
Sweat damage will occur in a cargo hold containing machinery parts when ______.A.the outside air is colder than the cargo．B.the air temperature of the hold is higher than the outside air temperature．C.the dew point of the hold is higher than the temperature of the cargo．D.the dew point of the outside air is lower than the temperature of the cargo
The dew point is reached when the ______.A.temperature of the air equals the temperature of the seawaterB.atmospheric pressure is 14.7 lbs. per square inchC.relative humidity reaches 50%D.air becomes saturated with water vapor
Sweat damage in a hatch full of canned goods in cartons will occur when the ______．A.Air temperature is higher than the temperature of the cargoB.Air temperature is lower than the temperature of the cargoC.Dew point is higher than the temperature of the cargoD.Dew point is lower than the temperature of the cargo
As the temperature for an air mass decreases, the ______.A.absolute humidity increasesB.relative humidity increasesC.specific humidity increasesD.dew point rises
单选题As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperature will （）.AincreaseBdecreaseCremain unchangedDbe greatest at dew point
单选题As the temperature for a given mass of air increase, the（）.Adew point increaseBdew point decreasesCrelative humidity increasesDrelative humidity decreases
单选题The dew point temperature is（）.Aalways higher than the air temperatureBalways lower than the air temperatureCequal to the difference between the wet and dry bulb temperaturesDthe temperature at which the air is saturated with water vapor
单选题Temperature and moisture characteristics are modified in a warm or cold air mass due to （）.Apressure changes in the air massBmovement of the air massCthe heterogeneous nature of the air massDupper level atmospheric changes
单选题A re-heater, as used in an air conditioning system, is designed to control the （）Achilled water temperatureBdew point temperatureCprimary air temperatureDdry bulb temperature
单选题As the temperature of the air reaches the dew point，（）.Arain must developBfog may formCit begins to snowDwater freezes
单选题Exhaust temperature increases in all cylinders, the possible cause may be（） (1) increased scavenging air temperature (2) air in fuel pumps and fuel valves (3) fouling of air and gas passagesA(1)+(2)B(1)+(3)C(2)+(3)D(1)+(2)+(3)
单选题Sweat damage will occur in a cargo hold containing machinery parts when（）.Athe outside air is colder than the cargoBthe air temperature of the hold is higher than the outside air temperatureCthe dew point of the hold is higher than the temperature of the cargoDthe dew point of the outside air is lower than the temperature of the cargo
单选题Fog forms when the air（）.Ais 50% water saturatedBis 90% water saturatedCtemperature is greater than the dew point temperatureDtemperature is equal to，or below the dew point temperature
单选题Hygroscopic cargoes should be ventilated when（）.Agoing from a warm to a coldBthe dew point of the outside air is greater than the dew point of the air in the holdCthe dew point of the air in the hold is very lowDthe outside dew point is 16°C and the cargo temperature is 12°C
单选题As the temperature of an air mass decreases，the（）.Aabsolute humidity decreasesBrelative humidity increasesCspecific humidity decreasesDdew point rises
单选题A refrigerant with oil in solution has a （）.Ahigher boiling temperature for a given pressure than does a pure refrigerantBlower boiling temperature for a given pressure than does a pure refrigerantCboiling pressure equal to that of a pure refrigerant at a given pressureDboiling point will not be affected by entrained oil
单选题The greater the pressure difference between a high and a low pressure center，the（）.Adryer the air mass will beBcooler the temperature will beCgreater the force of the wind will beDwarmer the temperature will be
单选题The amount of moisture in a given sample of air, when compared with the amount of moisture the air could hold if totally saturated at the existing temperature of the sample, is called （）.Aabsolute humidityBspecific humidityCeffective humidityDrelative humidity
单选题As the temperature for a given mass of air increases，the（）.Adew point increasesBdew point decreasesCrelative humidity increasesDrelative humidity decreases
单选题Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?（）ACooling the air to a temperature just above dew pointBHeating the air to a point at which moisture will boil off ,then re-cooling itCCooling the air to a point below dew point, then reheating itDHeating the air and then cooling it to a point below dew point
单选题Hygroscopic cargoes should be ventilated when（）.Agoing from a warm to a cold climateBthe dew point of the outside air is greater than the dew point of the air in the holdCthe dew point of the air in the hold is very lowDthe outside dew point is 16°C and the cargo temperature is 12°C
单选题Hygroscopic cargoes should be ventilated when（）.Agoing from a warm to a cold climateBthe dew point of the outside air is greater than the dew point of the air in the holdCthe dew point of the air in the hold is very lowDthe outside dew point is 16℃ and the cargo temperature is 12℃
单选题A space should be ventilated when（）.AThe cargo's temperature is colder than the dew point of the air in the spaceBThe cargo's temperature is warmer than the dew point of the air in the spaceCThe dew point of the air in the space is lower than the dew point of the outside airDAll of the above