题目内容
对于具有支座的桥梁，桥梁髙度是指( ).
2021-10-21
A.多孔桥梁中各孔净跨径的总和
B.桥面与低水位之间的高差
C.通航水位至桥跨结构最下缘之间的距离
D.桥上行车路面标高至桥跨结构最下缘之间的距离
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