单项选择题
Combustion knock occurring in a diesel engine can be caused by （）.
A.excessive fuel penetration B.prolonged injection lag C.reduced ignition lag D.prolonged ignition lag
单项选择题 A thrust bearing is used with a propulsion diesel engine to （）.
单项选择题 Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
单项选择题 Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
