單項(xiàng)選擇題In order to maintain a constant outlet water temperature of 80-85℃ from the engine, a three-way valve is installed()

A.at the jacket cooler outlet to control the flux through the engine
B.at the jacket cooler outlet to control the flux through the cooler
C.at the engine outlet to control the flux through the engine
D.at the engine inlet to control the flux through the engine


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About the jacket water, that of the auxiliary engines usually() is circulated by pumps, and the main engine usually ()

A.an engine-driven;as well
B.an engine-driven;has an independent pump
C.an independent;as well
D.an independent;has an engine-driven pump

2.單項(xiàng)選擇題The cooling system() needs least maintenance work for in this kind of system()

A.open;the minimum components
B.open;the high cooling efficiency
C.central;there are more coolers and a extra set of pumps
D.central;there is only one component contacts seawater

3.單項(xiàng)選擇題An alarm device inserted between the deaerating tank and the expansion tank can notify the on-watching crew that ()

A.the expansion tank is lack of water
B.the expansion tank is over flowing
C.there is something wrong with the cooling system
D.there is something wrong with the engine

4.單項(xiàng)選擇題As an alternative to the conventional seawater cooling system, is based on principles about cooler locations, ()flow control and preheating, but with a central cooler and one additional set of pumps().

A.the central cooling system, different
B.the central cooling system, the same
C.the open cooling system, different
D.the open cooling system, the same

5.單項(xiàng)選擇題()is harmful for fuel pumps, fuel valves, cylinder liner, exhaust valve seats, and the turbocharger blades as well.

A.Bad combustion of the fuel
B.Bad atomization of the fuel
C.Liquid contaminants
D.Solid contaminants

最新試題

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

Flame failure in an automatically fired auxiliary boiler can from a/an ()

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 additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

題型:?jiǎn)雾?xiàng)選擇題

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()

題型:?jiǎn)雾?xiàng)選擇題

Which of the following items don’t belong to dock repair works?()

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 Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the()

題型:?jiǎn)雾?xiàng)選擇題

During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.

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