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反铲挖土机的挖土特点是( ) 。

A、后退向下,强制切土

B、前进向上,强制切土

C、后退向下,自重切土

D、直上直下,自重切土

时间：2021-07-17 23:36 关键词：工程管理专升本建筑施工技术与组织 19级补考 2020年第二学期补考期末考试

答案解析

A

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