单项选择题X 纠错
A.the main engines
B.the auxiliary engines
C.the emergency generator engine
D.the auxiliary engines and the main engine(s)
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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
单项选择题
A.fuel valves;exhaust valve
B.exhaust valves;inlet valve
C.fuel valves;inlet valve
D.exhaust valves;fuel valve
单项选择题
A.scavenging air ports;exhaust ports
B.inlet ports;scavenging air ports
C.scavenging air ports;inlet ports
D.exhaust ports;inlet ports
单项选择题
A.open;short;after
B.closed;short;after
C.open;long;before
D.closed;long;before
单项选择题
A.Inefficient scavenging;twice
B.Inefficient scavenging;1~8 times
C.Fewer strokes in a circle;twice
D.Fewer strokes in a circle;1~8 times