A.24h
B.48h
C.72h
D.96h
E.120h
[单选题]测定化妆品中霉菌和酵母菌的总数时,一般需要培养A.24hB.48hC.72hD.96hE.120h
[单选题]化妆品真菌和酵母菌培养观测的温度和时间一般是A.37℃,24hB.35℃,48hC.28℃,72hD.28℃,48hE.37℃,72h
[单选题]检测化妆品中的真菌和酵母菌,需培养A.12hB.24hC.40hD.72hE.96h
[单选题]测定化妆品中霉菌和酵母菌的总数时,若有霉菌蔓延生长,为避免影响其它霉菌和酵母菌计数,培养时间应缩短为A.12 hB.24 hC.36 hD.48 hE.60 h
[单选题]化妆品中霉菌和酵母菌总数不得大于A.100CFU/ml或100CFU/gB.200CFU/ml或200CFU/gC.300CFU/ml或300CFU/
[单选题]化妆品中霉菌和酵母菌总数不得大于A.100CFU/ml或100CFU/gB.200CFU/ml或200CFU/gC.300CFU/ml或300CFU/
[单选题]化妆品中霉菌和酵母菌总数不得大于()A .50CFU/ml或50CFU/gB .100CFU/ml或100CFU/gC .150CFU/ml或150CFU/gD .200CFU/ml或200CFU/g
[单选题]测定化妆品中霉菌和酵母菌的总数时,若有霉菌蔓延生长,为避免影响其它霉菌和酵母菌计数,培养时间应缩短为A.12hB.24hC.36hD.48hE.60h
[单选题]测定化妆品霉菌和酵母菌时采用的培养基是A.卵磷脂琼脂培养基B.虎红(孟加拉红)培养基C.乳糖胆盐培养基D.营养琼脂培养基E.血琼脂培养基
[单选题]食品菌落总数测定的培养时间为A.72hB.48hC.36hD.24hE.16~18h