题目内容
人类确认的致癌物是指
2021-02-02
A.临床已见个别癌症病例
B.动物实验证据明确,但流行病学调查证据有限
C.流行病学调查证据明确
D.体外实验证据明确
E.动物实验证据明确,但流行病学调查证据缺乏
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