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[单选] STC600T5 5节大截面U型主臂,全伸臂长多少米?副臂多少米?主臂全伸起升高度多少米?
A.47.5m;15m;48m B.47.5m;16m;48m C.48m;15m;47.5m D.48m;16m;47.5m
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