更多"The lowest temperature required to "的相关试题:
[单项选择]The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the （）
A. auto-ignition point
B. flash point
C. burning temperature
D. fire point
[单项选择]The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the（）.
A. flash point
B. fire point
C. upper explosive limit
D. lower explosive limit
[单项选择]The lowest temperature at which a liquid gives off enough vapor to ignite in the presence of an ignition source is called its （）.
A. boiling point
B. flash point
C. viscosity point
D. toxic point
[单项选择]The (auto)ignition temperature is that temperature atwhich（）.
A. no spark or flame is required to ignite gas or vapor
B. a fuel begins to give off explosive vapors
C. a fuel if ignited will continue to burn
D. a 1% mixture of the fuel with air will explode
[单项选择]The required fireman’s outfits required for ship’s are not to be used for any other purpose EXCEPT for the（）.
A. oxygen and explosion meter when it is used for detection of flare gases
B. self-contained breathing apparatus，when used as protection from gas leaking from a refrigeration unit
C. boots and gloves that are made of rubber or electrically non-conductive material，if used when repairing electrical equipment
D. lifeline，if used by personnel entering a compartment which might be deficient of oxygen
[单项选择]When considering the lowest fuel system operating temperature, （） are important.
A. specific gravity or relative density
B. open flash point and closed flash point values
C. higher calorific and lower calorific values
D. cloud point and pour point values
[单项选择]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
[单项选择]The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）
A. Cross
B. Parallel
C. Counter
D. Circular
[单项选择]Temperature and moisture characteristics are modified in a warm or cold air mass due to （）.
A. pressure changes in the air mass
B. movement of the air mass
C. the heterogeneous nature of the air mass
D. upper level atmospheric changes
[单项选择]（）is the temperature today?
A. What
B. How
C. How many
D. How much
[单项选择]Temperature control valves installed in the jacket cooling water system of a diesel engine modulates the rate of water flow through the （）.
A. cooling water pump
B. nozzle cooling passages
C. cylinder jackets
D. heat exchanger
[单项选择]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
[单项选择]Ambient temperature is the （）.
A. amount of temperature rise with no load
B. temperature of the compartment where the motor is located
C. normal operating temperature, less the room temperature
D. amount of temperature developed by an operating motor
[单项选择]Higher than normal temperature air passing through the intake of a diesel engine will result in（）
A. greater overall efficiency
B. greater fuel economy
C. lower horsepower
D. lower compression ratio
[单项选择]A lower thermostatic temperature setting will provide a desired degree of comfort in a room where （）
A. low relative humidity is maintained
B. triple banded squirrel cage fans are used
C. air circulation is a maximum
D. high relative humidity is maintained
[单项选择]High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by （）.
A. engine overload
B. low combustion temperature
C. plugged fuel nozzle holes
D. excessive compression pressure
[单项选择]The saturation temperature of the refrigerant must be （） that required in the evaporator refrigerated space.
A. above
B. below
C. equal to
D. None of the above
[单项选择]To determine the pressure and temperature limitations under which LFG is required to be transported on a barge，you should look at the（）.
A. Certificate of Inspection
B. loading order
C. rules and regulations for tankers
D. tankerman's document
