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

<pre id="hrdel"><legend id="hrdel"></legend></pre>

單項選擇題

Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the（）

A.cooling water leaving each cylinder
B.fuel oil entering the injector
C.exhaust gases at various locations
D.lube oil at the bearing supplies

你可能感興趣的試題

單項選擇題

Low compression pressure in a diesel engine is caused by（）

A.low water in the expansion tank
B.improperly seated valves
C.low fuel oil pressure
D.worn or broken cylinder liner sealing rings

單項選擇題

A pyrometer is an instrument used to measure the temperature of the diesel engine（）

A.exhaust
B.fuel oil
C.cooling water
D.cylinder liner