单项选择题
A.low exhaust temperature B.loss of engine power C.burned intake valves D.engine racing
An operating turbocharged diesel engine that suddenly l...
单项选择题An operating turbocharged diesel engine that suddenly loses power, is due to a/an（）
A.restricted turbocharger air intake B.oil leak into the turbocharger C.dribbling injector D.low fuel viscosity
The exhaust valve opens before bottom dead center in a ...
The exhaust valve opens before bottom dead center in a four stroke engine to（） Ⅰ.allow for blow down Ⅱ.Reduce pumping losses
A.Ⅰ only B.Ⅱ only C.both Ⅰ and Ⅱ D.neither Ⅰ nor Ⅱ
Which of the turbo-charging systems listed operates wit...
单项选择题Which of the turbo-charging systems listed operates with the least average back pressure in the exhaust manifold?（）
A.Constant volume B.Constant pressure C.Pulse pressure D.Radial flow
