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

The most practical way of detecting an overload in one cylinder of an operating large, low-speed ,main propulsion diesel engine is to ()

A.check the cylinder exhausts for black smoke
B.listen for combustion knock in that cylinder
C.isolate each cylinder and inspect the injector
D.check the cylinder exhaust temperature frequently

微信掃碼免費(fèi)搜題