单项选择题
A.low exhaust back pressure B.air in the fuel system C.gasket blow-by or leakage D.incorrect assembly of idler springs
A diesel engine cranks properly during starting but imm...
单项选择题A diesel engine cranks properly during starting but immediately stallsWhich of the following systems is most likely at fault?（）
A.Hydraulic starting B.Electric starting C.Ignition D.Fuel
The exhaust gases in a supercharged two-stroke/cycle di...
单项选择题The exhaust gases in a supercharged two-stroke/cycle diesel engine are expelled from the cylinder by （）
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
Which of the listed items should be secured before perf...
单项选择题Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）
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
