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【多选题】
编制变更设计文件的内容包括（ ）。A.
勘察设计单位应严格按照铁道部相关规定和《变更设计会审纪要》以及确定的安全应急方案编制变更设计文件
B.
工类变更设计文件应包括变更设计原因、变更设计方案及工程数量和概（预）算
C.
原设计方案及工程数量和概算，有设计文件和变更设计图纸，经济技术比较资料和分析说明
D.
Ⅰ类变更设计的设计深度为施工图设计深度
E.
工点按详细施工图设计阶段的重点、重点隧道等设计要求进行设计
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