A.the proper back pressure
B.the cooling water temperature
C.correct timing and proper seating
D.accurate metering and the exhaust temperature
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A.low exhaust back pressure
B.air in the fuel system
C.gasket blow-by or leakage
D.incorrect assembly of idler springs
A.Hydraulic starting
B.Electric starting
C.Ignition
D.Fuel
A.pumping action of the piston
B.pressure of the fuel charge
C.vacuum developed in the manifold
D.pressure of the fresh air charge
A.Electric power and starting air
B.Lube oil standby pump and control air
C.Hydraulic switch and engage jacking gear
D.Motor drain and pneumatic control system power
A.engine overload
B.leaky valves
C.stuck or broken piston rings
D.low air injection pressure
最新試題
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（） is not installed on the main switchboar.