【单选题】【消耗次数：1】
砖砌平拱过梁的跨度不应超过（ ）。
①
1.0m
②
1.2m
③
1.5m
④
1.8m
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【单选题】
某级公路平曲线半径R＝60m，ls＝35m，采用第2类加宽，最大加宽W＝1.5m，加宽过渡方式按直线比例，缓和曲线上距ZH点10m处加宽值为（ ）。
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