【单选题】【消耗次数：1】
某基槽开挖工程，开挖深度3.5m，土质为Ⅱ类土，地下水位较高，土方机械宜选用：( )
①
推土机
②
正铲挖土机
③
拉铲挖土机
④
反铲挖土机
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正铲挖土机挖土时前进向上，强制切土。
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