题目：
某一既定单次照射剂量分成间隔一定时间的两次照射所观察到的存活细胞增加，是由于发生了（）
A.放射损伤的修复
B.细胞周期再分布
C.乏氧细胞再氧合
D.再群体化
E.血管生成
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A
某一既定单次照射剂量分成间隔一定时间的两次照射所观察到的存活细胞增加，是由于发生了（
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