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【单选题】
当非平衡凝固的合金一般会出现什么现象 ?A.
组织、成分均匀化；
B.
成分不均匀，出现树枝状偏析；
C.
与平衡凝固的合金组织、成分一样，没有区别。
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【判断题】The word “free” when used in a trade term means that the seller must pay all costs associated with delivering the goods to the buyer.
A.
正确
B.
错误
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