It causes excessive smoking and soot at low firing rates
It doesn’t readily burn when combined with oxygen
It clogs fuel oil strainers more often
It forms a corrosive acid when mixed with water or water vapor
第1题：
A smoking exhaust from an operating diesel engine could be caused by( ).
A.low sulfur content in the fuel
B.a loose injector inlet connection
C.late fuel injection
D.high injection pressure
第2题：
when the fuel is provided by the supplier ,what specifications of the oil can you get from the supplier receipt ?
第3题：
Which of the listed factors will indicate the most about the ability of a fuel to ignite in a diesel engine?
A.Viscosity
B.Sulfur content
C.Pour point
D.Cetane number
第4题：
英译汉：What’s the effect？（）
第5题：
第6题：
When using a fuel with a higher than normal sulfur content in an auxiliary four stroke diesel engine, you may
A.maintain higher than normal jacket water temperature
B.change the lube oil more frequently than normal
C.maintain a higher air-box temperature than normal
D.maintain a higher air-box pressure than normal
第7题：
Heavy fuel oils when spilled are ______.
A.more harmful to sea life than lighter oils
B.easier to clean up than lighter refined oils
C.less harmful to sea life than lighter oils
D.not a real threat to marine life
第8题：
The author suggests in the last paragraph that the effect of peer pressure is
[A] harmful
[B] desirable
[C] profound
[D] questionable
第9题：
What’s more, the distribution of paint is （）(不均匀).
第10题：
clogged fuel injection pumps
increased cylinder liner wear
intake valve stem corrosion
varnish deposit on pistons