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【单选题】
铺筑高速公路及一级公路沥青混合料时，一台摊铺机的铺筑宽度不宜超过6m，两幅之间（）mm宽度的搭接，上下层的搭接位置宜错开200mm以上。
A.
40～60
B.
40～80
C.
30～60
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