单项选择题
For a diesel engine, individual cylinder performance is commonly determined by exhaust gas（）
A.chemical analysis B.back pressure readings C.pyrometer readings D.infrared analysis
单项选择题 Low compression pressure in a diesel engine may be the result of （）
单项选择题 Exhaust gas pyrometers are useful for（）
单项选择题 A connecting rod in a four-stroke/cycle diesel engine is subject to（）
