单项选择题
A.provide energy to operate the engine between power impulses B.neutralize the primary inertia force of the crankshaft C.reduce the shock of starting loads on the main bearings D.prevent the engine from operating at critical speed
While overhauling a jerk-type fuel pump it is necessary...
单项选择题While overhauling a jerk-type fuel pump it is necessary to replace the pump plungerWhich of the parts listed below must also be replaced?（）
A.Delivery check valve B.Pump barrel C.Tubing to the injector D.Cam follower
Combustion gases formed in the cylinder of a diesel eng...
单项选择题Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by （）
A.cylinder valves B.compression rings C.piston skirts D.oil rings
The highest loads applied to the diesel engine cranksha...
单项选择题The highest loads applied to the diesel engine crankshaft main bearings are （）
A.axial loads B.firing loads C.inertia loads D.centripetal loads
