A.不應(yīng)小于4跨,且不應(yīng)小于6m B.不應(yīng)小于3跨,且不應(yīng)小于4.5m C.不應(yīng)小于3跨,且不應(yīng)小于5m D.不應(yīng)大于4跨,且不應(yīng)大于6m
A.300mm B.350mm C.400mm D.450mm
A.豎向6m,水平向6m B.豎向5m,水平向5.4m C.豎向4.5m,水平向5.4m D.豎向4.5m,水平向6m