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Air temperature varies with ______.
A.the altitude above sea level
B.the season of the year
C.the latitude or distance from the equator
D.All of the above
参考答案
更多 “ Air temperature varies with ______.A.the altitude above sea levelB.the season of the yearC.the latitude or distance from the equatorD.All of the above ” 相关考题
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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
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If the jacket water temperature rises rapidly above normal in a diesel engine, you should firstA.place standby cooler in operationB.reduce engine loadC.check thermostatic valveD.clean sea water strainer
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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
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The error in the measurement of the altitude of a celestial body，caused by refraction，increases as the ______.A.horizontal parallax decreasesB.observer's height above sea level increasesC.humidity of the atmosphere decreasesD.altitude of the body decreases
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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
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Should the steel be loaded in conditions where the ambient temperature is lower than might be encountered later on in the voyage，______．A.the hold should be ventilatedB.the hold should not be ventilatedC.the hold should be half-ventilatedD.hot air should be introduced into the hold
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______ is a type of fog occurring close to the sea surface when the air is dry and cold-probably at least 9℃ below the sea surface temperature．A.MIXING FOGB.ADVECTION FOGC.RADIATION FOGD.ARCTIC SEA SMOKE
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单选题An emergency sea anchor may be constructed by using（）.A
a boat bucketB
an air tank filled with waterC
an oar and canvas weighted downD
All of the above
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单选题Air temperature varies with（）.A
the altitude above sea levelB
the season of the yearC
the latitude or distance from the equatorD
All of the above
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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
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单选题If the jacket water temperature of an operating diesel engine suddenly rises above normal, the cause can be attributed to （）.A
an overfilled expansion tankB
excess chromate treatment of the jacket waterC
a clogged raw water sea suctionD
cavitation erosion of the heat exchanger tubes
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单选题In order to start a large, low-speed, main propulsion diesel engine on high viscosity fuel after an extended shutdown, the （）A
fuel must be preheatedB
intake air should be preheatedC
lube oil outlet temperature should be increased 20℃ above normalD
none of the above
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单选题The error in the measurement of the altitude of a celestial body，caused by refraction，increases as the（）.A
horizontal parallax decreasesB
observer's height above sea level increasesC
humidity of the atmosphere decreasesD
altitude of the body decreases
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单选题The purpose of the “set” hand on an aneroid barometer is to（）.A
adjust the barometerB
indicate any change in the reading of the barometerC
provide a correction for height above sea levelD
provide a correction for temperature changes
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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
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单选题An emergence sea anchor may be constructed by type of extinguisher?（）.A
a boat bucketB
an air tank filled with waterC
an oar and canvas weighted downD
All of the above
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单选题Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?（）A
Faulty turbocharger turbine diffuser ringB
Faulty turbocharger compressor ringC
Insufficient cooling water flowD
Clogged air intake filters
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单选题Which condition is necessary for a substance to burn?（）A
The temperature of the substance must be equal to or above its fire pointB
The air must contain oxygen in sufficient quantityC
The mixture of vapors with air must be within the explosive rangeD
All of the above
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单选题A number of biological sewage treatment plants are in use at sea but nearly all work on what is called the extended aeration processBasically the consists of oxygenating the liquor by bubbling air through itAccording to the above two sentences, the word "this" means （）.A
a sewage treatment plantB
the extended aeration processC
the liquorD
the bubbling air
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单选题Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?（）A
Clogged air intake faltersB
Piston blow-byC
A defective after-coolerD
Faulty exhaust valves
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单选题（）is a type of fog occurring close to the sea surface when the air is dry and cold-probably at least 9℃ below the sea surface temperature.A
MIXING FOGB
ADVECTION FOGC
RADIATION FOGD
ARCTIC SEA SMOKE
考题
单选题If the jacket water temperature rises rapidly above normal in a diesel engine, you should FIRST （）A
place standby cooler in operationB
reduce engine loadC
check thermostatic valveD
clean sea water strainer
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
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单选题Apparent altitude is sextant altitude corrected for（）.A
parallax and personal errorB
inaccuracies in the reading and reference levelC
visibility and magnitudeD
All of the above are correct
考题
单选题It can be concluded from information contained in the passage that the average temperature at an altitude of 1 kilometer above the Earth is about _____.A
15℃B
9℃C
2.5℃D
-12℃
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