單項(xiàng)選擇題In a diesel engine, when the fuel is injected into the cylinder,（）

A.the piston is just coming upward from the bottom dead center
B.the piston has moved about one-fifth of the way up
C.the piston has moved most of the way up and almost reached the TDC
D.the piston has just past the TDC


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One of the differences between a two-stroke engine and a four-stroke engine is,（）

A.a two-stroke engine can’t work without cylinders
B.a two-stroke engine can’t work without pistons
C.a two-stroke engine can’t work without crankshafts
D.a two-stroke engine can’t work without a blower

2.單項(xiàng)選擇題One of the differences between a two-stroke engine and a four-stroke engine is,（）

A.a two-stroke engine works without exhaust operation
B.a two-stroke engine works without compression stroke
C.a two-stroke engine works without expansion stroke
D.a two-stroke engine works without suction operation

3.單項(xiàng)選擇題In a diesel engine,（） works as working medium and changes the heat energy to mechanical energy, changes the reciprocating movement to rotary moment（）

A.fuel spray； the burning of the fuel
B.the burned gas mixture； connecting rod
C.medium shaft；crankshaft
D.the burned gas mixture； piston rod

4.單項(xiàng)選擇題In a diesel engine, offers the heat energy directly（）； works as working medium and changes the heat energy to mechanical energy（）

A.the burning of the fuel； medium shaft
B.fuel spray； fresh air
C.fuel； fuel spray
D.the burning of the fuel； the burned gas mixture

最新試題

To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）

題型：?jiǎn)雾?xiàng)選擇題

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）

題型：?jiǎn)雾?xiàng)選擇題

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）

題型：?jiǎn)雾?xiàng)選擇題

If separating effect is not good, which measure should be taken （）

題型：?jiǎn)雾?xiàng)選擇題

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）

題型：?jiǎn)雾?xiàng)選擇題

A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）

題型：?jiǎn)雾?xiàng)選擇題

The condensers located in various stages of a flash evaporator are cooled by（）

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

The treatment of the fuel oils involves storage, heating, filtering and（）

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