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


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1.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

2.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

4.單項(xiàng)選擇題Compared to a naturally aspirated diesel engine, a supercharged diesel engine has()

A.a cylinder air charge of higher pressure
B.increased pumping losses
C.less valve overlap
D.reduced blow-by

5.單項(xiàng)選擇題Late fuel injection occurring at, or after TDC in a diesel engine is indicated by excessive exhaust smoke and ()

A.low exhaust temperature
B.low firing pressure
C.fuel knock in each cylinder
D.mechanical knock in each cylinder