蛋白质与核酸的紫外吸收最高峰值分别是260nm和280nm。
参考答案：错
--Friends, we’ll graduate from middle school. We shouldn’t forget the days we spent with classmates.
--Yeah, without friends, one can’t be happy.
A. that B. when C who
能够抑制培养基内细菌生长的最低浓度称为
A．抗菌谱B．MICC．抗生素后效应D．MBCE．杀菌剂
