The master got permission to pump out 500 tons of clean sea water for （）.
When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to（）
The pump used to send the bilge water into the oily water separator（）the mixture because this might create finer oil particles.
（）is used to prevent the entry of sea water to the machinery space.
The reciprocating pump can’t draw water from a tank may be caused by （）.
（）is not a process of weathering of the oil spilled in the sea water.
The motor for the fresh water pump （）.
Which of the following pumps is most suitable for an oily water separator?（）
Domestic water pump is started automatically by （） which operates as the water level falls to a predetermined level.
With a vacuum boiling evaporator, the remainder of sea water fed to the evaporator is pumped out by （）.
In a vacuum boiling evaporator, the fresh water generated is pumped out by （）.
A centrifugal pump can’t supply water after startingYou should check （）.
（） is the production of pure water from sea water by evaporation and re-condensing.
In （）, hot diesel engine jacket water passes over the stack and heats the sea water passing through the tubes.
Water pump的中文意思是（）。
A water pump can not supply water after startingIt may be caused by （）.
The pressure head of a water pump is given in the unit of （）.
Permission is requested to pump out about 200 tons of clean sea ballast water for （） purposes．
If you were operating a centrifugal water service pump with worn wearing rings, the （）.
How many people are saved from the icy sea water?
What’s the most obvious difference among animal-driven chain pump, water-driven chain pump and wind-driven chain pump?
You’re at sea and you’re dying of thirst. Can you drink sea water？
