【单选题】
竖曲线半径站端为（ ）m。 ___
A. 2000
B. 3000
C. 4000
D. 5000
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答案
B
解析
暂无解析
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石料应为不风化或轻微风化的、坚硬的、有棱角和不会冻结而破裂的岩石，其容重不应小于（ ）。 ___
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浆砌片石护坡适用于河水流速（ ）,受主流冲刷及波浪作用剧烈的河砌体，砌体厚0.3~0.6m，视冲刷与波浪剧烈而定。 ___
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浆砌片石护坡适用于河水流速4~8m/s,受主流冲刷及波浪作用剧烈的河砌体，砌体厚（ ），视冲刷与波浪剧烈而定。 ___
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