单项选择题
A.a worn cylinder B.broken piston rings C.either A or B D.none of the above
Low compression of diesel engine may result from （）A.a ...
单项选择题Low compression of diesel engine may result from （）
A.a worn cylinder B.broken piston rings C.any of A and B D.none of the above
Leaky exhaust valve will result in which of the followi...
Leaky exhaust valve will result in which of the following?（） (1) high exhaust temperature; (2) low compression pressure; (3) low firing pressure.
A.(1) and (2) B.(1) only C.(2) only D.(1),(2) and (3)
Large marine diesel engines of crosshead construction g...
单项选择题Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.
A.cylinder liners and piston rings B.main bearings C.crankpin bearings D.turboblower
