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名词解释题
英译中:Temperature controlled space
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What best describes for how long a gas-free test is good ________.A.For as long as is indicated on the gas-free certificateB.For the instant that it is madeC.Until valves in line with the tank or compartment are reopenedD.Until changes in temperature or pressure affect the vapor content in the space
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单选题Which of the conditions listed will cause a refrigeration compressor to run constantly without simultaneously decreasing the temperature in the refrigerated space?()A
Shortage of refrigerant oilB
Slight shortage of refrigerantC
Excessive condenser cooling water flowD
Faulty expansion valve
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单选题() is the circulation and refreshing of the air in a space without necessarily a change of temperature.A
RefrigerationB
Air conditioningC
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单选题If a refrigeration compressor is running continuously without lowering the temperature in the refrigerated space, the trouble may be ().A
a shortage of compressor oilB
warm food in the refrigeratorC
excessive condenser cooling waterD
a shortage of refrigerant
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单选题What occurs in the combustion space of a diesel engine cylinder shortly after ignition and before the piston reaches TDC?()A
Rapid increase in temperature with constant pressureB
Rapid increase in pressure with constant temperatureC
Rapid increase in pressure and temperatureD
Rapid increase in volume and decrease in pressure
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单选题How are the pressure and temperature affected in a diesel engine cylinder during compression?()A
Pressure and temperature decreaseB
Pressure and temperature increaseC
Pressure decreases and temperature increasesD
Pressure increases and temperature decreases
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单选题Which of the following statements is correct concerning a typical shipboard multi-coil refrigeration system?()A
The liquid receiver functions to collect and remove non-condensable gasesB
A thermostatic expansion valve is used to control refrigerated space temperatureC
Refrigerant temperature in an evaporator is directly related to refrigerant pressureD
Dehydrators must be used continuously in a refrigeration system
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单选题Air conditioning is the process of treating air to control () its temperature, humidity, cleanliness and distribution to meet the comfort requirements of the occupants of the conditioned space.A
instantaneousB
instantaneouslyC
simultaneousD
simultaneously
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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 ()A
decreaseB
increaseC
decrease to zeroD
remain unchanged
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单选题() is the control of temperature and humidity in a space together with the circulation, filtering and refreshing of the air.A
RefrigerationB
Air conditioningC
VentilationD
Heating
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单选题Approximately what percent of tank space should be left for expansion of oil due to possible temperature increase?()A
1% to 3%B
1% to 2%C
4%D
2% to 4%
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单选题The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the ().A
quantity of fuel to be receivedB
flash point of the fuel as it is receivedC
fuel temperature as it is receivedD
viscosity of the fuel being received
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单选题A safety outlet is provided on the CO2 discharge piping to prevent().A
over pressurization of the space being floodedB
rupture of cylinder due to temperature increaseC
over pressurization of the CO2 discharge pipingD
flooding of a space where personnel are present
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单选题Certain dangerous goods are required “to be stowed in a mechanically ventilated space”. When such goods are carried in a closed Ro/Ro cargo space or a special category space,this space should().A
be mechanically operatedB
be temperature controlledC
be mechanically ventilatedD
not allow to run its refrigeration or heating equipment
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单选题If remote-controlled cars are more expensive than mechanical cars, and radio-controlled cars are more expensive than remote-controlled cars, which of the following statements must be true?A
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Radio-controlled cars are the most expensive.C
Radio-controlled cars are cheaper than remote-controlled cars.D
Mechanical cars are more expensive than remote-controlled cars.
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单选题Which of the following relationships should occur between the temperature developed in a combustion space, and the compression ratio of the engine?()A
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Higher temperatures create higher compression ratiosC
low temperatures create higher compression ratiosD
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单选题The temperature of the fuel oil received during bunkering operations is critical in determining the()A
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flash point at which the fuel will burnC
temperature to which the fuel must be heatedD
rate at which the fuel can be pumped during transfer operations
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drops,and the temperature dropsB
drops,and the temperature risesC
rises,and the temperature dropsD
rises,and the temperature rises
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单选题The jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by ()A
regulating the level of corrosion inhibitor in the primary cooling systemB
the level of the freshwater expansion tankC
varying the engine load to meet temperature requirementsD
the operation of the thermostatic valve
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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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