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="npvr0"><menu id="npvr0"></menu></progress>

單項(xiàng)選擇題

Low compression in a diesel engine could be caused by（）

A.worn or broken cylinder liner sealing rings
B.high cooling water temperature
C.worn or broken piston rings
D.low fuel oil pressure

你可能感興趣的試題

單項(xiàng)選擇題

The most common instrument used to measure diesel engine exhaust pressure is the （）

A.pyrometer
B.bourdon gauge
C.pneumercator
D.manometer

單項(xiàng)選擇題

A sudden drop in compression pressure in one cylinder of a diesel engine can be caused by（）

A.a leaking fuel injector nozzle
B.a clogged air filter
C.excessively early fuel injection
D.malfunctioning valves

<dd id="ia0yb"><acronym id="ia0yb"></acronym></dd>

<ruby id="ia0yb"><xmp id="ia0yb"></xmp></ruby>