corrosive deterioration of a bearing
inadequate air filtration
excessive ring and liner wear
excessive cooling of lubricating oil
第1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2题：
contaminated with sludge
contaminated with carbon
diluted with fuel oil
diluted with water
第3题：
A.high fuel oil viscosity
B.low fuel oil temperature
C.high lube oil viscosity
D.energized alow plugs
第4题：
acid
fuel oil
sediment
water
第5题：
(As it is now)
In those days, before having found the high fat content in black olives, we used to eat many of them.
Before black olives were considered unhealthy due to high fat content, we ate lots of them.
Until black olives had a high fat content we used to eat many of them.
Black olives were consumed in high numbers before the high fat content bad name was given.
第6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7题：
proper fuel injection
water in the fuel
incomplete combustion
burning of lube oil
第8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9题：
when
how
where
whether
第10题：
LPG is compatible with all cargos
LPG's high oxygen content makes it nonvolatile
Cargo tanks are inspected less frequently than on oil tankers
The cargo tanks are used for one type of cargo only