蛋白质四级结构(quaternary structure)
决定产品内容的取舍和更新的是()策略。 ["A、产品","B、定价","C、促销","D、经营"]
计量员在测定油罐车中油品的视密度时,估计密度计读数至()。 ["A、0.02g/cm3","B、0.01g/cm3","C、0.001g/cm3","D、0.0001g/cm3"]
蛋白质二级结构(protein secondary structure)
转子速度()会使轴承润滑系统失调。
蛋白质三级结构(protein tertiary structure)