更多"Since heat will not flow freely fro"的相关试题:
[单项选择]Intake air flow from a diesel engine turbocharger is directly proportional to engine（）
A. exhaust gas pressure
B. exhaust gas temperature
C. speed
D. load
[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]The oil pressure and flow from each bearings can be checked when（）
A. the lubricating pumps are stopped and the access doors are opened
B. the lubricating pumps are running and the access doors are opened
C. the engine is running and the access doors are closed
D. the engine is stopped and the access doors are closed
[单项选择]The heat removed from the refrigerant in the condenser of a refrigeration plant is the （）
A. latent heat of expansion
B. sensible heat of condensation
C. heat of compression
D. all of the above
[单项选择]（）can cause oil flow from sludge outlet of self cleaning separator.
A. Too much sludge accumulated in separator bowl
B. Diameter of gravity disc too large
C. High level tank lack of water
D. Oil input too rapidly
[单项选择]（）can not cause oil flow from water outlet of self-cleaning separator.
A. Oil temperature too high
B. Diameter of gravity disc too large
C. Oil temperature too low
D. High level tank out of water
[单项选择]（）can cause oil flow from water outlet of a separator.
A. Oil inlet valve opening too quickly
B. Oil temperature too high
C. Diameter of gravity disc too small
D. Viscosity of oil too low
[单项选择]The rate of heat transfer from a hot region to a cold region is affected most by the （）.
A. size of the heat sink
B. temperature difference between the regions
C. size of the heat source
D. total heat of the system
[单项选择]When subjected to high heat from a open flame, or an electric heating element, which of the listed refrigerants will break down and produce phosgene gas?（）
A. CO2
B. Methyl chloride
C. R-22
D. Sulphur dioxide
[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
[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 （） can tell us how much heat we can get from the burning of an oil.
A. viscosity
B. flash point
C. cetane number
D. calorific value
[单项选择]An azimuth angle for a body is measured from the（）.
A. observer's meridian
B. Greenwich meridian
C. body's meridian
D. zenith distance
[单项选择]Compensated flow control or constant flow valves are used in hydraulic systems to（）
A. compensate for major leaks in the system
B. maintain the original fluid viscosity
C. allow for changes in pressure and temperature within the system
D. assure constant fluid 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]low flow sensor位于（）
A. 主电子设备舱
B. 驾驶舱
C. 前电子设备舱
D. 空调舱
[名词解释]物质流通率 ratio of material flow
