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单选题
As the temperature of the air reaches the dew point，（）.
A
rain must develop
B
fog may form
C
it begins to snow
D
water freezes
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更多 “单选题As the temperature of the air reaches the dew point，（）.A rain must developB fog may formC it begins to snowD water freezes” 相关考题
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
考题
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
考题
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
考题
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
考题
When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold，you should ______.A.secure all ventilationB.shut down the exhaust blowersC.shut down the intake blowersD.ventilate the cargo holds
考题
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
考题
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
考题
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
考题
As the temperature for an air mass decreases, the ______.A.absolute humidity increasesB.relative humidity increasesC.specific humidity increasesD.dew point rises
考题
As the temperature for a given mass of air increases, the ______.A.dew point increasesB.dew point decreasesC.relative humidity increasesD.relative humidity decreases
考题
Fog is likely to occur when there is little difference between the dew point and the ______.A.relative humidityB.air temperatureC.barometric pressureD.absolute humidity
考题
单选题What occurs when rising air cools the dew point?（）A
advection fog formsB
humidity decreaseC
wind increaseD
Cloud form
考题
单选题As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperature will （）.A
increaseB
decreaseC
remain unchangedD
be greatest at dew point
考题
单选题The dew point of air is reached when the wet bulb temperature is （）.A
Twice the dry bulb temperatureB
10℃ above the dry bulb temperatureC
5℃ above the dry bulb temperatureD
Equal to the dry bulb temperature
考题
单选题The dew point temperature is（）.A
always higher than the air temperatureB
always lower than the air temperatureC
equal to the difference between the wet and dry bulb temperaturesD
the temperature at which the air is saturated with water vapor
考题
单选题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
考题
单选题Sweat damage will occur in a cargo hold containing machinery parts when（）.A
the outside air is colder than the cargoB
the air temperature of the hold is higher than the outside air temperatureC
the dew point of the hold is higher than the temperature of the cargoD
the dew point of the outside air is lower than the temperature of the cargo
考题
单选题When air is at its dew point it is at its（）A
lowest absolute humidityB
lowest relative humidityC
highest absolute humidityD
highest relative humidity
考题
单选题Fog forms when the air（）.A
is 50% water saturatedB
is 90% water saturatedC
temperature is greater than the dew point temperatureD
temperature is equal to，or below the dew point temperature
考题
单选题Hygroscopic cargoes should be ventilated when（）.A
going from a warm to a coldB
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
考题
单选题As the temperature for a given mass of air increases，the（）.A
dew point increasesB
dew point decreasesC
relative humidity increasesD
relative humidity decreases
考题
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?（）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
考题
单选题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
考题
单选题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℃ and the cargo temperature is 12℃
考题
单选题A space should be ventilated when（）.A
The cargo's temperature is colder than the dew point of the air in the spaceB
The cargo's temperature is warmer than the dew point of the air in the spaceC
The dew point of the air in the space is lower than the dew point of the outside airD
All of the above
考题
单选题When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold，you should（）.A
secure all ventilationB
shut down the exhaust blowersC
shut down the intake blowersD
ventilate the cargo holds
考题
单选题While on watch，you notice that the air temperature is dropping and is approaching the dew point.Which type of weather should be forecasted（）.A
HailB
Heavy rainC
SleetD
Fog
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