多选题:对背景材料中项目部第二项做法,下述说法正确的有(  )。

题目内容:
对背景材料中项目部第二项做法,下述说法正确的有(  )。 A.按一般常规施工方法实施坟区的路基土方工序是正确的
B.按一般常规施工方法实施坟区的路基土方工序是不正确的
C.用推土机推平坟地土丘
D.应清除坟区的树根、草皮、腐殖土
E.对坟坑、洞穴,应挖至原状土,然后分层填实至原基面高
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