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单项选择题
A.0.4%浓度,酸性,37℃
B.1%浓度,中性,37℃
C.0.4%浓度,中性,37℃
D.0.4%浓度,碱性,37℃
E.0.1%浓度,酸性,室温
单项选择题
A.40%甲醛10ml,0.01mol/L蒸馏水90ml
B.40%甲醛10ml,0.01mol/LpH7.4的PBS90ml
C.40%甲醛10ml,0.01mol/LpH7.4的PBS100ml
D.10%甲醛10ml,0.01mol/LpH7.4的PBS90ml
E.10%甲醛10ml,0.01mol/L蒸馏水90ml