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钢材的性能因温度而变化,在负温范围内钢材的塑性和韧性()
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钢材的性能因温度而变化,在负温范围内钢材的塑性和韧性()
A、不变
B、降低
C、升高
D、稍有提高,但变化不大
时间:2022-01-11 04:09
关键词:
钢结构设计原理
机械工程
大学试题
工学
答案解析
B
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