更多"（） is the temperature at which a li"的相关试题:
[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 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 temperature at which the air is saturated with water vapor and below which condensation of water vapor will occur is referred to as the（）.
A. precipitation point
B. vapor point
C. dew point
D. absolute humidity
[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 temperature at which water vapor in the atmosphere begins to condense is called the （）.
A. dew point temperature
B. condensation temperature
C. psychometric temperature
D. absolute humidity temperature
[单项选择]When compared to air temperature,which factor is most useful in predicting fog?（）
A. Vapor pressure
B. Dew point
C. Barometric pressure
D. Absolute humidity
[单项选择]The temperature of the fuel oil received during bunkering operation is critical in determining the （）
A. expansion space to leave in a tank
B. flash point at which the fuel will burn
C. temperature to which the fuel must be heated
D. rate at which the fuel can be pumped during transfer operations
[单项选择]Increasing the temperature of a fuel will reduce its （）.
A. viscosity
B. pressure
C. resistance
D. setting point
[单项选择]Cylinder wall temperature, fuel oil supplier, and oil passage （）.
A. are interdependent
B. are not interdependent
C. have nothing to do with each other
D. are independent
[单项选择]Which may ignite fuel vapors?（）
A. Static electricity
B. An open and running motor
C. Loose wiring
D. All of the above
[单项选择]Which of the fuel injection systems listed uses a spring loaded differential spray needle valve and individual pump for each cylinder?（）
A. Common-rail injection
B. Air injection
C. Jerk pump injection
D. Distribution injection
[单项选择]As its temperature rises, the volume of fuel oil in the tanks will （）.
A. remain the same
B. increase
C. decrease
D. none of the above
[单项选择]The temperature （） a liquid changes its state from liquid to gas depends upon the liquid itself and upon the pressure （） it is subjected in the containing vessel.
A. at which/to which
B. from which/at which
C. to which/from which
D. in which/on which
[单项选择]Maintaining the proper fuel oil temperature will result in （）
A. the elimination of valve wear
B. improved atomization
C. a decrease in cylinder blow-by
D. an increase in cylinder blow-by
[单项选择]Which of the following fuel oil characteristics establishes the danger point when transferring, pumping, and firing procedures are concerned?（）
A. Fire point
B. Flash point
C. Specific gravity
D. viscosity
[单项选择]Which of the following statements concerning fuel atomization in a diesel engine cylinder is correct?（）
A. The greater the atomization, the greater the penetration
B. The greater the atomization, the less the penetration
C. The degree of atomization has nothing to do with the degree of penetration
D. Atomization and penetration are one and the same
[单项选择]Which statement is TRUE concerning fuel vapors on a vessel（）.
A. Fuel vapors gather in the lowest portions of the vessel
B. Fuel vapors can only be ignited by an open flame
C. Vent outlets should be located above the level of the carburetor air intake
D. None of the above
