【单选题】
(36442)气焊气割中，氧气瓶距乙炔瓶，明火、热源的距离应大于___。(1.0分)
A. 3m
B. 5m
C. 10m
D. 15m
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答案
B
解析
暂无解析
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(36448)柔性桥墩主要承受___，可使混凝土的受压强度得以充分发挥，节省大量材料，同时也为墩台快速 施工创造了条件。(1.0分)
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(36457)目前我国铁路使用1000t级盆式橡胶支座，适用支撑力为___。(1.0分)
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