单项选择题X 纠错
A.open;the minimum components
B.open;the high cooling efficiency
C.central;there are more coolers and a extra set of pumps
D.central;there is only one component contacts seawater
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单项选择题
A.the expansion tank is lack of water
B.the expansion tank is over flowing
C.there is something wrong with the cooling system
D.there is something wrong with the engine
单项选择题
A.the central cooling system, different
B.the central cooling system, the same
C.the open cooling system, different
D.the open cooling system, the same
单项选择题
A.Bad combustion of the fuel
B.Bad atomization of the fuel
C.Liquid contaminants
D.Solid contaminants
单项选择题
A.the main engines
B.the auxiliary engines
C.the emergency generator engine
D.the auxiliary engines and the main engine(s)
单项选择题
A.as close to the main engine as possible
B.as close to the main pump as possible
C.just before the fuel valve
D.just before the booster pump
单项选择题
A.centrifugal separators; the engine cylinder
B.oily water separators; the engine cylinder
C.oily water separators; the fuel supply system
D.centrifuges; the fuel supply system
单项选择题
A.boiling and cavitations; low temperature
B.boiling and cavitations; pressurized
C.leaking and boiling; low temperature
D.leaking and boiling; pressurized
单项选择题
A.smaller, higher
B.higher, smaller
C.smaller, smaller
D.higher, higher
单项选择题
A.heavy wall and intensive cooling
B.heavy wall and no cooling
C.thin wall and no cooling
D.thin wall and intensive cooling
单项选择题
A.on both the external and internal top edges
B.on both the external top and bottom edges
C.on both the external and internal bottom edges
D.on all the four edges