计算题:内螺纹铜管底壁厚为0.253mm,总壁厚为0.441mm,请计算出齿高为多少 发布时间:2019-07-04 08:49 │ 来源:www.tikuol.com 题型:问答题 简答题 问题: 计算题:内螺纹铜管底壁厚为0.253mm,总壁厚为0.441mm,请计算出齿高为多少。
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题型:问答题 简答题 In international trade, the term FOB means______A.free on boardB.freight contractC.freight and cost D.free carrier 查看答案