（）具有快速更换的特点，更换时不需拧动螺丝，而只要将钻套逆时针方向转动一个角度，使螺钉头部对准钻套缺口，即可取下钻套。

答案查看网，轻松搜题/搜资源

【单选题】【消耗次数：1】

① 特殊钻套

② 可换钻套

③ 快换钻套

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