海船船员考试
单选题What is head tank in the closed cooling water system used for?（）A for the release of air from the cooling waterB providing expansion room for heated cooling waterC a place for implementing water and water treatment agentD all of the above
题目
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
相似问题和答案
第1题：
Because the circulating water is in a closed loop,_______is installed to cater for expansion and contraction of the water at different conditions of operation.
A.an expansion joint
B.a drain tank
C.a head tank
D.a contraction tank
第2题：
a broken shaft on the freshwater pump
an excessive accumulation of scale exchanger
an incorrect thermostatic element operating range
lube oil in the cooling water
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：
fresh water expansion tank
sea water expansion tank
thermostatic expansion valve
jacket water cooler accumulator
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：
An open vent in the cooling system
A fouled sea chest
A restricted water passage in the engine
Air entrained in the cooling water
第8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