多选题:堤防土方施工进行距离丈量时,在视距为(  )m时可采用视距法测定。

题目内容:
堤防土方施工进行距离丈量时,在视距为(  )m时可采用视距法测定。 A.25
B.35
C.45
D.55
E.65
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