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问题详情

铝合金门窗中的90系列是指_____

A、20世纪90年代标准

B、框宽（厚）90mm

C、.洞口尺寸900mm

D、型材薄壁厚9mm

时间：2021-09-06 21:24 关键词：联大安阳师范学院建筑工程技术房屋建筑学

答案解析

B

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