單項(xiàng)選擇題Overflow valve is used to ()

A.control the fluid flow through it
B.prevent the pressure before it over the specified valve
C.make the pressure after it steady
D.control the direction of oil flow


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Hydraulic control check value is generally used to () in the marine hydraulic mechanism.

A.control the back pressure of return oil
B.lock the oil lines under some conditions
C.change the direction of oil flow
D.act as relief valve

2.單項(xiàng)選擇題Check value is used to control ()

A.direction of oil flow
B.back pressure of return oil
C.bypass of filter
D.high pressure overflow

3.單項(xiàng)選擇題()can cause oil flow from sludge outlet of self cleaning separator.

A.Too much sludge accumulated in separator bowl
B.Diameter of gravity disc too large
C.High level tank lack of water
D.Oil input too rapidly

4.單項(xiàng)選擇題()can not cause oil flow from water outlet of self-cleaning separator.

A.Oil temperature too high
B.Diameter of gravity disc too large
C.Oil temperature too low
D.High level tank out of water

5.單項(xiàng)選擇題()can cause oil flow from water outlet of a separator.

A.Oil inlet valve opening too quickly
B.Oil temperature too high
C.Diameter of gravity disc too small
D.Viscosity of oil too low

最新試題

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()

題型:?jiǎn)雾?xiàng)選擇題

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

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

題型:?jiǎn)雾?xiàng)選擇題

The main purpose of port State control is not to()

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

Which one is NOT the ‘clear grounds’ for a more detailed inspection?()

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

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

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