单项选择题
A.the inlet valve is open B.the exhaust valve is open C.both valves are closed D.both valves are open
Valve gear knocks are more easily located while the eng...
单项选择题Valve gear knocks are more easily located while the engine （）.
A.is running B.stops C.is repaired D.lacks of oil
VIT means （）A.variable injection timingB.variable inlet...
单项选择题VIT means （）
A.variable injection timing B.variable inlet tonnage C.vertical incoming tonnage D.vertical inlet tank
Under manoeuvring condition the main engine may run on ...
单项选择题Under manoeuvring condition the main engine may run on （）.
A.gas oil B.marine diesel oil C.residue oil D.crude oil
