单项选择题
A.3-30t/h B.3-9t/h C.3-29t/h D.3-15t/h
A.5-50t/h B.5-65t/h C.10-20t/h D.10-55t/h
A.1-10t/h B.5-10t/h C.1-15t/h D.10-35t/h
A.10-50t/h B.15-100t/h C.15-130t/h D.15-150t/h
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