多项选择题
A.0m/min B.0.5m/min C.1m/min D.70m/min
A.26100mm B.27100mm C.28100mm D.20160mm
A.20t/h B.45t/h C.50t/h D.55t/h
A.0.2m/min B.0.25m/min C.40m/min D.30m/min
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