单项选择题
A.6KV,380V B.10KV,380V C.10KV,6KV
A.40t B.50t C.55t
A.2250t∕h B.2500t∕h C.2700t∕h
A.悬臂皮带跑偏 B.悬臂皮带张紧力不够 C.驱动滚筒包胶纹磨平
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