discharge side of the centrifugal pump
suction side of the centrifugal pump
the lowest point of the cooling water system
inlet of the main engine
第1题：
In a diesel engine closed freshwater cooling system, the amount of coolant flowing through the heat exchanger is controlled by the __.
A.suction pressure regulator
B.thermostatic bypass valve
C.sea water temperature
D.water level in the expansion tank
第2题：
for the release of air from the cooling water
providing expansion room for heated cooling water
a place for implementing water and water treatment agent
all of the above
第3题：
What is head tank in the closed cooling water system used for?
A.for the release of air from the cooling water
B.providing expansion room for heated cooling water
C.a place for implementing water and water treatment agent
D.all of the above
第4题：
A top tank
A head tank
A head valve
A drain tank
第5题：
The compressed air
The compressing air
The transfer pump
The head tank
第6题：
_____ allows for expansion and water make up in the water cooling system.
A.A top tank
B.A head tank
C.A head valve
D.A drain tank
第7题：
to decrease scale formation
for better cooling effect
for more economical purpose
to raise vacuum
第8题：
A.Low pressure of the lubricating oil
B.Low level of the lubricating oil
C.High temperature of the lubricating oil
D.High temperature of the cooling water
第9题：
discharge side of the centrifugal pump
suction side of the centrifugal pump
the lowest point of the cooling water system
inlet of the main engine
第10题：
air
heat
sludge
steam