Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the ______.A.air charge density becoming too highB.piston crown surfaces becoming too coldC.formation of excessive quantities of condensateD.compression pressure being greatly reduced

Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the ______.

A.air charge density becoming too high

B.piston crown surfaces becoming too cold

C.formation of excessive quantities of condensate

D.compression pressure being greatly reduced


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Fuel has been injected but ignition fails. The possible cause may be ______.A.slightly leaky exhaust valveB.increased scavenging air temperatureC.engine cylinders not scavenged sufficientlyD.too much water in the fuel oil

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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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

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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

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