试题与答案

设计厚度是指计算厚度与腐蚀裕量之和,名义厚度是指标注在()上的厚度。

题型:填空题

题目:

设计厚度是指计算厚度与腐蚀裕量之和,名义厚度是指标注在()上的厚度。

答案:

参考答案:图样

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题型:问答题

       对外开放是党的十一届三中全会的重大决策。经过多年的实践,在全国范围内基本形成了全方位、多层次、有重点、梯度推进的对外开放格局。

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