【单选题】【消耗次数：1】
冷弯性能是指（ ）。
①
钢材在常温下承受弯曲变形的能力，是钢材的重要工艺性能
②
其表面抵抗重物压入产生塑性变形的能力
③
指焊接后在焊缝处的性质与母材性质的一致程度
④
塑性变形能力
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