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问题 问答题 论述题

钢坯有哪些断面形状？

答案

参考答案：

钢坯有方形、矩形、圆形和其他形状（异形）。

名词解释

岩石比热
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简答题

应怎样进行绿色消费？

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                               

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