A.broken down
B.stuck
C.oil leakage
D.carbonized
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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
A.Too larger
B.Too smaller
C.Excess
D.Excessive
A.An air compressor
B.An indicator cock
C.An air distributor
D.A safety valve
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