A.the engine was over filled
B.there might be a fuel leak
C.there might be a water leak
D.all of the above
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A.cross-head
B.cylinder
C.connecting rod
D.spark plug
A.broken down
B.stuck
C.oil leakage
D.carbonized
A.water leakage
B.steam leakage
C.oil leakage
D.air leakage
A.pressed；to
B.pressurized；with
C.pushed；in
D.compressed；to
A.flame temperature
B.fuel oil
C.air movement
D.gas forces
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