在招标文件要求的提交投标文件截止时间的至少（）目前，招标人可以以书面形式对己发出的招标文件进行必要的澄清或者修改。
- A.10
- B.15
- C.20
- D.21
正确答案及解析
正确答案
解析
在招标文件要求的提交投标文件截止时间至少15日前，招标人可以以书面形式对己发出的招标文件进行必要的澄清或者修改。
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