單項(xiàng)選擇題In a closed cooling system for a turbocharged, four-stroke/cycle diesel engine, fluctuating water pressure can be caused by ()

A.improper venting of the cooling system
B.carrying the expansion tank water level too high
C.a totally clogged impeller in the cooling water pump
D.an incorrectly set cooling system temperature control


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題A dirty lube oil strainer can result in()

A.crankcase
B.low lube oil temperature
C.excessive oil consumption
D.low bearing oil pressure

2.單項(xiàng)選擇題Differential needle valves used in fuel injectors are directly closed by()

A.cam action
B.spring force
C.fuel oil pressure
D.firing pressure

3.單項(xiàng)選擇題In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?()

A.An open vent in the cooling system
B.A fouled sea chest
C.A restricted water passage in the engine
D.Air entrained in the cooling water

4.單項(xiàng)選擇題Proper dispersion of fuel in a diesel engine cylinder is dependent upon the ()

A.injection pressure
B.shape of combustion space
C.turbulence in combustion space
D.all of the above

最新試題

If two A.C.generators are to be operated in parallel, the load is distributed evenly by()

題型:?jiǎn)雾?xiàng)選擇題

When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

題型:?jiǎn)雾?xiàng)選擇題

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()

題型:?jiǎn)雾?xiàng)選擇題

Cold weather starting of a diesel engine may be made easier by()

題型:?jiǎn)雾?xiàng)選擇題

Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?()

題型:?jiǎn)雾?xiàng)選擇題

()are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.

題型:?jiǎn)雾?xiàng)選擇題

To proceed to the assistance of a ship in distress is()

題型:?jiǎn)雾?xiàng)選擇題

()connectors hold best if a wire is accidentally pulled or a connection becomes loose.

題型:?jiǎn)雾?xiàng)選擇題

Engine parameters shall be corresponded to NOx Technical Files. This is required by ()

題型:?jiǎn)雾?xiàng)選擇題

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?()

題型:?jiǎn)雾?xiàng)選擇題