更多"The amount of moisture in a given s"的相关试题:
[单项选择]As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperature will （）.
A. increase
B. decrease
C. remain unchanged
D. be greatest at dew point
[单项选择]After "F.W.E" is given, the air system is shut down, the （） gear put in, all drains and indicator cocks opened, and the cooling water kept running.
A. steering
B. timing
C. turning
D. running
[单项选择]As the temperature for a given mass of air increases，the（）.
A. dew point increases
B. dew point decreases
C. relative humidity increases
D. relative humidity decreases
[单项选择]After the order “（）” is given, the air system is shut down, the turning gear put in.
A. Finished with Engine
B. Stop the Engine
C. Stand-by Engine
D. Slow-down Engine
[单项选择]（）in the open air has given you a good color.
A. Work
B. Worked
C. Working
D. To be working
[单项选择]Purging air from a hydraulic system is necessary when（）
A. adding small amounts of oil to the system
B. the system has been overheated
C. the system has been drained and then filled with new oil
D. the system has been idle for a long period of time
[单项选择]Air receivers installed in starting air systems are to be （）.
A. cylindrical in shape with service connections located at the top and bottom
B. opened and made available for inspection during biannual inspections provided
C. with automatic drain traps for the removal of moisture
D. so installed as to make the drain connections effective under extreme conditions of trim
[单项选择]Air entering an air-cooled refrigeration system is indicated by （）.
A. frosting of the liquid line
B. higher than normal head pressure
C. a clear sight glass
D. abnormally cold reefer boxes
[单项选择]Compressed air is supplied by air compression to （）.
A. the air receivers
B. the starting valves
C. the cylinder covers
D. the distributors
[单项选择]Air line lubricators are used in compressed air systems to lubricate （）.
A. the suction and discharge valves
B. tools and equipment served by compressed air
C. air line reducing valves
D. all of the above
[单项选择]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. instantaneous
B. instantaneously
C. simultaneous
D. simultaneously
[单项选择]In reference to air conditioning, when air attains the maximum amount of moisture it can hold at a specific temperature, it is said to be （）.
A. superheated
B. saturated
C. condensed
D. convected
[单项选择]The quantity of cooled air delivered by an air conditioning unit should （） the sum of the quantity of air re-circulated to the unit and the quantity mechanically exhausted.
A. balance
B. not balance
C. be more than
D. be less than
[单项选择]（） supplies pilot air to control the cylinder air start valves.
A. An air compressor
B. An indicator cock
C. An air distributor
D. A safety valve
[单项选择]The air compressor pumps air to the（）.
A. engine cylinder
B. air bottle
C. evaporator
D. condenser
