use of low viscosity oil in cold weather
increased moisture content of inlet air in cold weather
increased drag of pistons and bearings due to increased oil viscosity
higher compression pressures reached due to smaller clearances existing in the engine during cold weather
第1题：
_____ the engines, the diesel engine is ____ used engine on board
A.Between / more commonly
B.Among / the most commonly
C.Between / not more commonly
D.Among / not the most commonly
第2题：
principle
principal
cause
case
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：
rotary compressors
reciprocating compressors
centrifugal compressors
screw compressors
第5题：
compressed air
electricity
hydraulic oil
compressing air
第6题：
If a diesel engine turned over freely but failed to start, the cause could be ________.
A.water in the fuel
B.cold lube oil
C.excessive starting air pressure
D.excessive fuel pressure
第7题：
low lube oil temperature
low starting air temperature
air in the fuel injection
water in the starting air system
第8题：
Cold weather starting of a diesel engine is more difficult than warm weather starting due to
A.use of low viscosity oil in cold weather
B.increased moisture content of inlet air in cold weather
C.increased drag of pistons and bearings due to increased oil viscosity
D.higher compression pressures reached due to smaller clearances existing in the engine during cold weather
第9题：
increasing the quantity of starting air
increasing the lube oil pressure
heating the engine fuel supply
heating the engine jacket water
第10题：
increase in starting air pressure
increase in lube oil viscosity
compression expansion device
jacket water heater