A.120 B.140 C.160 D.180
A.6.0m B.5.0m C.5.5m D.6.5m
A.隧道道床板面渗水整治作业 B.隧道拱顶掉块整治作业 C.圬工梁表面裂纹整治作业
A.300minB.180minC.360minD.240min
A.12m简支箱梁 B.22m简支箱梁 C.32m简支箱梁 D.42m简支箱梁
微信扫一扫关注公众号后联系客服
微信扫码免费搜题
