【单选题】29 / 63某桥n=8n=8n=8块板、k=2k=2k=2车道,按粗估式且C=1.15C=1.15C=1.15,则mcm_cmc约为?A0.2880.2880.288正确B0.1150.1150.115C0.5000.5000.500D1.151.151.15参考答案A参考解析mc=1.15×2/8=0.2875m_c=1.15\times 2/8=0.2875mc=1.15×2/8=0.2875。