A centrifugal compressor’s purge recovery unit .
A.reclaims water
B.purges air without losing refrigerant
C.purges air with some loss of refrigerant
D.purges lube oil from the refrigerant
第1题
A.Control the amount of lube oil burned in the combustion chamber
B.Transmit heat from the piston to the cylinder liner
C.Prevent damage to ring groove inserts by acting as a heat dam
D.Dissipate combustion chamber gas pressure by channeling it through the ring gap
第2题
A.not less than twice
B.greater at least twice than
C.not greater twice than
D.larger three times than
第3题
A.Intake manifold
B.Water-cooled exhaust system
C.After-cooler
D.Exhaust diffuser
第4题
A.convection
B.conduction
C.radiation
D.ventilation
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