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
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
A.direction of oil flow
B.back pressure of return oil
C.bypass of filter
D.high pressure overflow
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
A.Oil temperature too high
B.Diameter of gravity disc too large
C.Oil temperature too low
D.High level tank out of water
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
If separating effect is not good, which measure should be taken ()
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()
The cetane rating of diesel fuel is an indication of the ()
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()
The shipboard oil pollution emergency plan will be invalid after ()
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()
()are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
The treatment of the fuel oils involves storage, heating, filtering and()
To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()
The condensers located in various stages of a flash evaporator are cooled by()