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
As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperatures will ______.
A.increase
B.decrease
C.remain unchanged
D.be greatest at dew point
相关考题：
In an air conditioning system, moisture is removed from the air by ______.A.filtersB.separatorsC.ducted trapsD.dehumidifiers
A sling psychrometer is used to measure ______.A.seawater temperatureB.engine temperatureC.dry bulb and wet bulb temperaturesD.barometric pressure
The moisture equilibrium chart can be used to determine the ______．A.Absolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium existsB.Dew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodityC.Enthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargoD.Temperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo
We must make a difference between（）language and（）language.Aspoken；writtenBspeaking；writtenCspeaking；writingDspeak；write
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The dew point of air is reached when the wet bulb temperature is （）.ATwice the dry bulb temperatureB10℃ above the dry bulb temperatureC5℃ above the dry bulb temperatureDEqual to the dry bulb temperature
单选题In an air conditioning system, moisture is removed from the air by（）AfilersBseparatorsCducted trapsDdehumidifiers
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Clouds form（）.Aas a mass of warm，humid air rises into the atmosphere and cools，condensing moisture into small dropletsBas winds blow across bodies of water，the sun causes the moisture to be absorbed and move upward forming cloudsCdry air compresses moisture from the atmosphere into cloudsDwhen the relative humidity of the atmosphere is low
单选题What could cause a significant difference between actual chain tension and the tension measured by the tensiometer? （）AThe type of anchor and mooring line being usedBThe type of bottom in which the ship is anchoredCA significant difference between air and water temperatureDThe chain contacting a chock or fairlead between the tensiometer and the lower swivel fairlead
单选题In reference to air conditioning, when air attains the maximum amount of moisture it can hold at a specific temperature, it is said to be （）.AsuperheatedBsaturatedCcondensedDconvected
单选题The moisture equilibrium chart can be used to determine the（）.AAbsolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium existsBDew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodityCEnthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargoDTemperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo
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If air at 95℃ dry bulb temperature and 50% relative humidity is conditioned to 75℃ dry bulb temperature and 50% relative humidity, it is an example of （）.Acooling onlyBcooling and humidifyingCcooling and dehumidifyingDadiabatic cooling
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A cargo hold has been determined to have a relative humidity of 80% and a dry bulb temperature of 80 ℃ and a dry bulb temperature of 85℃.When the hold is sealed and the dry bulb temperature decreases, the relative humidity in the space will （）AdecreaseBincreaseCdecrease to zeroDremain unchanged
单选题To prevent the unnecessary loading of an air conditioning system while maintaining the designed dry bulb temperature and relative humidity in an air conditioning system, you should （）Aadmit only enough fresh outside air to provide proper ventilationBreduce the air reheating system loadClower the compressor head pressureDoperate the purge recovery unit continuously
单选题On what do you depend having the air cooler of main engine chemically washed?（）Aincreased air pressure differenced before and aft air coolerBreduced exhaust temperature in all cylindersCreduced temperature difference between water inlet and outletDboth A and C
单选题The principal difference between loop scavenging and crossflow scavenging, as used in single acting diesel engines, is the （）Adirection of air flow within the cylinderBsequence of port openingCmethod of opening exhaust portsDvolume of air admitted to the cylinder
单选题A psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. By comparing these two temperature readings with a set of tables you can determine the （）.Aatmospheric pressureBwind speedCrelative humidity and dew pointDwind chill factor
单选题The latent heat of water vapor in air is dependent upon the （）Adry bulb temperatureBwet bulb temperatureCdew pointDdry point
单选题We must make a difference between（）language and（）language.Aspoken；writtenBspeaking；writtenCspeaking；writingDspeak；write
单选题Hot air can hold（）.Aless moisture than cold airBmore moisture than cold airCthe same amount of moisture as cold airDmoisture independent of air temperature
单选题The passage is mainly discussing _____.Athe difference between general history and art historyBthe making of art historyCwhat we can learn from artDthe influence of artists on art history
单选题The sensible heat of air is dependent upon the （）.Adry bulb temperatureBwet bulb temperatureCsaturation temperatureDwater vapor superheat