A.the connecting rod
B.the cross-head
C.the piston rod
D.the air box
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A.cylinder cover
B.cross-head shoes
C.guide-ways
D.scavenging boxes
A.should be scraped
B.should be derusted
C.should be drilled out
D.to be brushed off
A.a bridge gauge
B.a micrometer
C.a thermometer
D.a indicator
A.the burning
B.the fuel
C.the air charge
D.the engine piston
A.welded
B.replaced
C.drilled again
D.bored
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