海船船员考试
单选题Excessively worn, or polished ends on a diesel engine valve spring, indicate（）A burned exhaust valvesB excessive spring compressionC spring surgeD worn valve seats
题目
burned exhaust valves
excessive spring compression
spring surge
worn valve seats
相似问题和答案
第1题：
increase
decrease
remain the same
increase on compression decrease on expansion
第2题：
the engine is overloaded
the engine is cold
there is too much lube oil in the cylinders
the turbocharger is fouled
第3题：
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
第4题：
increased engine breathing efficiency
excessive valve lash
excessive lube oil consumption
lower than normal fuel consumption
第5题：
most critical in a four-stroke cycle diesel engine
most critical in a two-stroke/cycle diesel engine
most critical in a four-stroke/cycle diesel engine if it is turbocharged
of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine
第6题：
point of opening
speed of opening
lift from its seat
all of the above
第7题：
excessively late injection timing for each cylinder
incorrectly adjusted intake valve timing
incorrectly adjusted fuel injector
incorrectly adjusted intake valve clearance
第8题：
A two stroke diesel engine exhaust temperature will be lower than a four stroke diesel engine of the same displacement because the _____. ① MEP is lower and the scavenging air is cooling the exhaust gases ② valve overlap in a four stroke
A.①
B.②
C.① and ②
D.Neither ① nor ② is correct
第9题：
cooled to appropriate temperature
warmed up gradually to appropriate temperature
opened up and renewed
ground and polished
第10题：
valve guides
oil control rings
valve seats
compression rings