單項選擇題
A.last part of the exhaust stroke, and the first part of the intake stroke B.last part of the intake stroke only C.early part of the injection stroke only D.early part of the power stroke
A.fresh water expansion tank B.sea water expansion tank C.thermostatic expansion valve D.jacket water cooler accumulator
A.The oil temperature is less than the cooling water temperature B.The oil pressure is less than the cooling water pressure C.The oil pressure is greater than the cooling water pressure D.The oil flow control valve is always installed in the oil input line
A.casting interlocking components B.welding plates to form sections for assembly C.forging integral components D.case hardening integral components
A.check and regulate the water level B.close the air cock once fires are lit C.blowdown the gage glass D.crack the steam stop to assure protective steam flow
A.Maintains a constant head on the system B.Reduces the likelihood of air or steam pockets formation C.Provides a low pressure point for the addition of makeup cooling water D.All of the above
A.brass B.copper C.iron D.monel metal or stainless steel
A.reduce water temperature B.reduce water turbulence C.provide an air cushion D.allow for an increase in water volume as the engine warms up
A.changing filter elements would not interrupt engine operation B.filtering occurs twice in each pass of oil through the system C.clogging will not occur D.dropping pressure is half of that through a single filter unit
A.decrease in maximum cylinder pressure B.increase in ignition lag C.decrease in fuel consumption per horsepower-hour D.decrease in exhaust manifold pressure
A.low voltage trip to trip B.reverse power trip to trip C.damage to windings D.excessive exhaust temperatures
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