99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項(xiàng)選擇題

A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to ()

A.feel the high pressure fuel line
B.check the cylinder exhausts for white smoke frequently
C.check the cylinder exhaust temperature
D.isolate each cylinder and inspect the injector

微信掃碼免費(fèi)搜題