目前在我国预应力混凝土大直径管桩的生产中采用了(  )等工艺。A.高速离心B.振动C.辊压D.二次振捣E.真空吸水

作者: rantiku 人气: - 评论: 0
问题 目前在我国预应力混凝土大直径管桩的生产中采用了(  )等工艺。
选项 A.高速离心 B.振动 C.辊压 D.二次振捣 E.真空吸水
答案 AC
解析

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