A.principle
B.principal
C.cause
D.case
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A.two-stroke
B.four-stoke
C.long-stroke
D.short-stroke
A.bedplate, connecting rods
B.crankshaft, the connecting rods
C.frames, crossheads
D.crankshaft, the cylinder
A.the information
B.the formation
C.the scatter
D.the friction
A.the cylinder weight
B.the cylinder bore
C.the cylinder length
D.the cylinder cover
A.density
B.bore
C.weight
D.material
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