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Low pressure tires have ______. potential for compaction than high pressure tires.
 A.higher B.lower C.similar

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Diameter at breast height is usually measured at ______ above ground level . A.1.5m B.1.4m C.1.3m
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At a standard lumber mill, the first grading choice for hardwood is the ______. A.Factory Class B.Veneer Class C.Sawlog Class
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