A.cylinder liners and piston rings
B.main bearings
C.crankpin bearings
D.turboblower
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A.well ventilated
B.well clean
C.in good order
D.more room
A.present
B.prevent
C.avoid
D.provide
A.is scavenged
B.has been scavenged
C.be scavenged
D.was scavenged
A.is scavenged
B.is atomized with fuel oil
C.be scavenged
D.be atomized with fuel oil
A.well
B.good
C.excellent
D.respectively
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