A.Should knocking occur
B.If knocking occur
C.Should if knocking occurs
D.If occur knocking
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A.keyway
B.shaft
C.packing
D.valve
A.the peak pressure in a cylinder
B.the temperature of the cooling water
C.the fuel consumption
D.none of the above
A.land
B.skirt
C.crown
D.plate
A.increase the governor oil pressure
B.adjust the speed droop setting
C.adjust the speeder spring travel
D.adjust the compensating needle valve
A.four-stroke
B.two-stroke
C.slow speed
D.reversible
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