发布时间:2025-02-07 00:41:45
【答案】:C
桥梁支座可按其跨径、结构形式、反力力值、支承处的位移及转角变形值选取不同的支座。
我去海南旅游刚请了绿发晶回来导游说 用盐水浸泡消磁 网上看了好多方法
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