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单选题
In general, domestic flesh water tank kept under pressure by an external supply of （）.
A
forced circulating pump
B
compressed air
C
gravity tank
D
bead tank
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单选题（） provides the head or pressure to supply the domestic water where required.A
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a level controllerB
a temperature switchC
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Bilge waterC
Oil transferD
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单选题The highest pressure in any closed diesel engine freshwater cooling system is at the （）.A
jacket water outletB
expansion tank inletC
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单选题Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?（）A
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Gumming of the tank relief valvesC
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考题
单选题In a general oil cooler circulated by sea water, the oil is at a higher pressure, the result being that any leak in the cooler will mean a loss of （）.A
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考题
单选题In any diesel engine closed freshwater cooling system, the lowest pressure exists at the （）.A
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They should operate in advance of the pressure/vacuum breakersC
They should be kept in good working order by regular inspection and cleaningD
All of the above
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