更多"The heat identified by only a chang"的相关试题:
[单项选择]The heat required to change a substance from a liquid to a gas without experiencing a temperature change is defined as the latent heat of （）.
A. fusion
B. vaporization
C. sublimation
D. condensation
[单项选择]The heat required to change a substance from a solid to a liquid while at its freezing temperature, is known as the latent heat of （）.
A. fusion
B. vaporization
C. condensation
D. sublimation
[单项选择]The heat used to change a liquid to a vapor is called （）.
A. latent heat of fusion
B. latent heat of vaporization
C. specific heat of vaporization
D. latent heat of the gas
[单项选择]The only means of removing the latent heat of condensation from a refrigerant in the normal refrigeration cycle is by （）.
A. passing it through the expansion valve
B. condensing refrigerant in the system condenser
C. passing the gaseous refrigerant through the heat interchanger on the suction side of the compressor
D. maintaining a high pressure on the systems receiver
[单项选择]A change of a documented vessel’s name can only be made by the（）.
A. American Bureau of Shipping
B. Commissioner of Customs
C. Treasury Department
D. Coast Guard
[单项选择]A change of a Chinese vessel’s name can only be made by the （）.
A. CCS
B. the Customs
C. MOC
D. MSA
[单项选择]For safe storage, the maximum allowable temperature to which refrigerant bottles should be exposed is （）.
A. 100℃
B. 125℃
C. 150℃
D. 175℃
[单项选择]High firing pressures and a low exhaust temperature in a diesel engine may result from （）.
A. decreased piston to cylinder head clearance
B. increased exhaust system back pressure
C. early fuel injection timing
D. low scavenge air temperature
[单项选择]Sub-cooling is a method of reducing the temperature of the liquid refrigerant below its （）.
A. freezing point
B. floc point
C. condensing temperature
D. compression temperature
[单项选择]The sum of the sensible heat and the latent heat of any substance is known as （）.
A. total heat
B. residual heat
C. specific heat
D. superheat
[单项选择]A safety shackle is identified by its（）.
A. shape
B. pin
C. certification stamp
D. color code
[单项选择]A lighthouse can be identified by its（）.
A. painted color
B. light color and phase characteristic
C. type of structure
D. All of the above
[单项选择]Scale accumulation on evaporator heat exchange surfaces （）.
A. increases brine density
B. increases distillate salinity
C. reduces metal corrosion
D. reduces heat transfer
[单项选择]Additional heat extraction from the exhaust gases can be effected by adding an （） section to the unit in plants.
A. air cooler
B. economizer
C. injector
D. air blower
[单项选择]Symptoms of heat stroke are（）.
A. cold and moist skin，high body temperature
B. cold and dry skin，low body temperature
C. hot and moist skin，high body temperature
D. hot and dry skin，high body temperature
[单项选择]Which of the statements listed concerning heat transfer is correct?（）
A. Heat is always transferred at a constant rate
B. Heat transfer rate increases as temperature difference increases
C. The rate of heat transfer is not affected by temperature difference
D. The high temperature region is known as a heat sink
[单项选择]A patient suffering from heat exhaustion should be（）.
A. moved to a cool room and told to lie down
B. kept standing and encouraged to walk slowly and continuously
C. given a glass of water and told to return to work after 15 minutes of rest
D. None of the above are correct
