單項選擇題Diesel engine jacket water is used in the distillation process as the ().

A.coolant for the distillate
B.coolant for the brine cooler
C.means of heating the feedwater
D.primary means of producing a vacuum within the distiller


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1.單項選擇題The replacement piping for diesel engine high pressure fuel systems must be the same length and diameter as the original piping to ().

A.avoid unnecessary pints inventory
B.keep torsional vibration constant
C.use existing supports and braces
D.maintain specified injection characteristics

2.單項選擇題Friction, engine wear and oil consumption in a diesel engine are directly related to the ().

A.acidity of the oil
B.pour point of the oil
C.flash point of the oil
D.viscosity of the oil

4.單項選擇題In a naturally aspirated diesel engine, the volume of air intake is directly related to engine ().

A.compression ratio
B.valve size
C.fuel pressure
D.cylinder clearance volume

5.單項選擇題To check the setting of the overspeed trip on a diesel powered generator, you would use a ().

A.tachometer
B.torsion meter
C.dynamometer
D.pony brake