海船船员考试
单选题If a used lube oil analysis indicates an excessive chromate content, this means （）A air filtration is inadequateB engine coolant leaking into the lube oilC fuel oil is leaking into the lube oilD the piston rings are excessively worn
题目
air filtration is inadequate
engine coolant leaking into the lube oil
fuel oil is leaking into the lube oil
the piston rings are excessively worn
相似问题和答案
第1题：
why do you need to take the lube oil sample for analysis ? in the analyzing , what can you possibly find ?and if you find these substances ,what are the possible problems the engines may have ?why ?
第2题：
using a slightly dirty air filter
using oil having an excessive viscosity
intercooler or after-cooler leaks
carrying the oil level higher than normal
第3题：
If a used lube oil analysis indicates excessive chromate content, this means
A.air filtration is inadequate
B.engine coolant is leaking into the lube oil
C.fuel oil is leaking into the lube oil
D.the piston rings are excessive worn
第4题：
when
how
where
whether
第5题：
proper fuel injection
water in the fuel
incomplete combustion
burning of lube oil
第6题：
What would white exhaust smoke from a diesel engine probably mean ________．
A.Late fuel injection
B.Excess combustion air
C.Dribbling injector tips
D.Excessive lube oil consumption
第7题：
contaminated with sludge
contaminated with carbon
diluted with fuel oil
diluted with water
第8题：
In an auxiliary diesel engine bypass type lubricating oil system, the main lube oil pump forces_______ .
A.all of the oil used by the engine through a filter
B.some of the oil used by the engine through a filter
C.some of the oil used by the engine through a centrifuge
D.all of the oil used by the engine through a centrifuge
第9题：
compression pressure
lube oil header pressure
scavenge air pressure
piston ring blow-by
第10题：
the filter to operate more efficiently
the lube oil cooler to be bypassed
positive lube oil pump suction to be assured
galvanic action in the cooler to be minimized