问题
多项选择题
CRTSⅡ型板式轨道隧道地段道床结构由（）等组成。
A.轨道板
B.水泥乳化沥青砂浆填充层
C.凸型挡台
D.混凝土底座
答案
参考答案：A, B
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CRTSⅡ型板式轨道隧道地段道床结构由（）等组成。
A.轨道板
B.水泥乳化沥青砂浆填充层
C.凸型挡台
D.混凝土底座
参考答案：A, B
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