多项选择题
A.140mm*140mm B.160mm*160mm C.150mm*150mm D.140mm*150mm
A.W1300 B.W800 C.W600 D.W470
A.翘皮夹杂 B.波浪 C.凹坑 D.氧化铁皮压入
A.高炉煤气 B.转炉煤气 C.焦炉煤气 D.混合煤气
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