单项选择题
A.piston skirt B.pinion C.crosshead D.compression rings
A pyrometer is an instrument commonly used to measure（）...
单项选择题A pyrometer is an instrument commonly used to measure（）
A.cylinder pressure B.flame intensity C.exhaust gas temperature D.crankshaft axial alignment
Worn main bearings in a diesel engine can result in （）A...
单项选择题Worn main bearings in a diesel engine can result in （）
A.decreased compression pressure B.increased lube oil pressure C.lower lube oil temperature D.excessive leakage past the piston rings
When monitoring diesel engine performance, the most use...
单项选择题When monitoring diesel engine performance, the most useful instrument to use is the （）
A.dwell-tachometer B.exhaust gas pyrometer C.fuel flow rate mete D.exhaust gas analyzer
