毒理学研究中提倡3R原则是指A、replacement
eduction
efinementB、replacement
ecovery
efinem
毒理学研究中提倡3R原则是指
A、replacement
eduction
efinement
B、replacement
ecovery
efinement
C、replacement
eduction
eference
D、replacement
ecovery
eactivity
E、replacement
ecovery
eference
请帮忙给出正确答案和分析,谢谢!