the water produced during combustion
the sulfur in the fuel
unburned fuel oil
all of the above
第1题:
lube cooler failure
poor heat transfer
mechanical lubricator failure
camshaft seizure
第2题:
increasing the quantity of starting air
increasing the lube oil pressure
heating the engine fuel supply
heating the engine jacket water
第3题:
Oil oxidation as a result of excessively high lube oil temperature, is harmful to a diesel engine Because
A.oil foaming will always occur
B.large quantities of oil are consumed
C.lube oil viscosity is always decreased
D.corrosive by-products are usually formed
第4题:
Dirty lube oil filter
Too much piston ring wear
High lube oil viscosity
Low lube oil temperature
第5题:
pitting
sludge
hard varnish
all of the above
第6题:
contaminated with sludge
contaminated with carbon
diluted with fuel oil
diluted with water
第7题:
decreased compression pressure
increased lube oil pressure
lower lube oil temperature
excessive leakage past the piston rings
第8题:
low lube oil temperature
low lube oil pressure
high exhaust temperature
high cooling water pressure
第9题:
a dirty lube oil strainer
internal water leaks
an oil suction line restriction
excessive wears of the cooling water pump
第10题:
clogged lube oil piping
excessive valve-guide clearance
high lube oil viscosity
low lube oil temperature