97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

<abbr id="a4k5x"></abbr>

<ruby id="a4k5x"><output id="a4k5x"></output></ruby><pre id="a4k5x"><legend id="a4k5x"></legend></pre>

單項(xiàng)選擇題

Which of the listed pre-start procedures should be carried out prior to starting a crosshead type diesel engine after an overhaul?（）

A.Pre-lube cylinders with hand cranks
B.Open all air space drain cocks
C.Open all indicator valves
D.All of the above

你可能感興趣的試題

單項(xiàng)選擇題

Late fuel injection in a diesel engine is indicated by low firing pressure with （）

A.low exhaust temperature
B.low exhaust pressure
C.mechanical knock in each cylinder
D.black or gray exhaust smoke

單項(xiàng)選擇題

The bore of a diesel engine cylinder describes the （）

A.swept volume of the cylinder
B.inside diameter of the cylinder
C.piston displacement in the cylinder
D.length of the piston stroke

<ruby id="m57zb"><small id="m57zb"></small></ruby>