A.2 B.3 C.4 D.6
A.80.875±0.005mm B.100.875±0.005mm C.90.875±0.005mm D.105.875±0.005mm
A.發(fā)動機過熱 B.活塞環(huán)卡滯 C.機油消耗量過大 D.活塞敲缸