下列属于预应力锚索施工流程图的有（）

下列属于预应力锚索施工流程图的有 A. 钻机成孔 B. 孔深验收及清孔 C. 二次清孔 D. 锚索制作与安装 E. 锚索张拉与锁定 答案: ABDE Explanation: The correct statements are A, B, D, and E. A: Drilling the hole using a drilling machine is an essential step. B: After drilling, the hole depth needs to be checked, and then the hole should be cleaned. D: The production and installation of the prestressed anchor are significant steps. E: Lastly, prestressing and locking the anchor is another crucial step. The incorrect statement is C: C: There is no mention of a "second cleaning of the hole" in the construction process. I hope this helps you understand the correct answers to the questions! If you have any more questions or need further clarification, feel free to ask.