无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

<progress id="vrs6n"></progress>

<dd id="vrs6n"></dd>

<ins id="vrs6n"></ins>

<menu id="vrs6n"></menu>

單項選擇題

Low cylinder compression pressure and a high exhaust temperature may indicate （）

A.early fuel injection timing
B.leaking valves
C.a continuously open scavenge air port
D.low cooling water temperature

你可能感興趣的試題

單項選擇題

Which of the listed problems can be a cause of low compression pressure in a diesel engine?（）

A.clogged air filter
B.compression stroke
C.burned exhaust valves
D.all of the above

單項選擇題

When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the（）

A.intake stroke
B.compression stroke
C.power stroke
D.exhaust stroke

<ruby id="kqwin"><small id="kqwin"></small></ruby>

<dl id="kqwin"><acronym id="kqwin"></acronym></dl>