单选题Which instrument is used to measure the relative humidity of air?（）AHydrometerBHygrometerCSpectrometerDBarometer
单选题
Which instrument is used to measure the relative humidity of air?（）
A
Hydrometer
B
Hygrometer
C
Spectrometer
D
Barometer
参考解析
解析：
暂无解析
相关考题：
If air at 95°Cdry bulb temperature and 50%relative humidity is conditioned to 75°Cdry bulb temperature and 50%relative humidity, it is an example of() A.cooling onlyB.cooling and humidifyingC.cooling and dehumidifyingD.adiabatic(绝热的)cooling
Which of the listed devices is used to measure pressure and convert it to an electrical signal?A.TransducerB.ReducerC.TransformerD.Rectifier
A sling psychrometer is a(n) ______.A.type of cargo gearB.instrument used in celestial navigationC.instrument used to measure relative humidityD.instrument used to measure specific gravity
A hygrometer is device used for determining ______.A.the absolute temperatureB.atmospheric pressureC.wind velocityD.relative humidity
An aneroid barometer is an instrument ______.A.used to measure the speed of windB.in which the pressure of air is measuredC.that tells which direction a storm is coming fromD.used to measure the height of waves
As the temperature for an air mass decreases, the ______.A.absolute humidity increasesB.relative humidity increasesC.specific humidity increasesD.dew point rises
As the temperature for a given mass of air increases, the ______.A.dew point increasesB.dew point decreasesC.relative humidity increasesD.relative humidity decreases
单选题In order to accurately measure very low pressures, which of the instruments listed should be used?（）ACompound gageBBonrdon tubeCManometerDDeadweight gage
单选题A compound gage is used to measure （）.Atemperature and pressureBhumidity and temperatureCpressure and vacuumDpressure and humidity
单选题Which of the listed devices is used to measure pressure and convert it to an electrical signal?（）ATransducerBReducerCTransformerDRectifier
单选题When air is at its dew point it is at its（）Alowest absolute humidityBlowest relative humidityChighest absolute humidityDhighest relative humidity
单选题An aneroid barometer is an instrument（）.Aused to measure the speed of windBin which the pressure of the air is measuredCthat tells which direction a storm is coming fromDused to measure the height of waves
单选题Which instrument is used to predict the approach of a low pressure system（）.AAnemometerBFathometerCBarometerDThermometer
单选题Which of the following tools is BEST used to measure voltage and amperage from a power source?（）ALoopback PlugBMultimeterCPower Supply TesterDExtension Magnet
单选题A pyrometer is an instrument commonly used to measure（）Acylinder pressureBflame intensityCexhaust gas temperatureDcrankshaft axial alignment
单选题A hand held instrument used to measure distances between objects and the ship is a（）.AvernierBpsychrometerChygrometerDstadimeter
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When comparing the air with 50% of relative humidity with the air with 100% of relative humidity, which one will hold more water?（）Athe formerBthe latterCnot for sureDsame each other
单选题The most common instrument used to measure diesel engine exhaust pressure is the （）ApyrometerBbourdon gaugeCpneumercatorDmanometer
单选题A lower thermostatic temperature setting will provide a desired degree of comfort in a room where （）Alow relative humidity is maintainedBtriple banded squirrel cage fans are usedCair circulation is a maximumDhigh relative humidity is maintained
单选题A sling psychrometer is a(n)（）.Atype of cargo gearBinstrument used in celestial navigationCinstrument used to measure relative humidityDinstrument used to measure specific gravity
单选题An instrument that maintains a continuous record of humidity changes is called a（）.AthermometerBbarometerChygrographDthermograph
单选题The effective temperature of air is dependent upon（） Ⅰ.relative humidity Ⅱ.air velocityAⅠonlyBⅡonlyCBoth Ⅰand ⅡDNeitherⅠnor Ⅱ