【简答题】精氨酸的pK1(α-COOH) = 2.17,pK2(α-NH3+) = 9.04,pK3(R基)= 12.48,其pI值为( )
【单选题】To what does Waiting for Godotowe part of its success?
D.
The characterization of tramps
【单选题】“我的地盘我做主!”体现的是营销4I理论的()
【简答题】精氨酸的pK1(COOH)值为2.17,pK2值为9.04,pK3值为12.98,其pI(等电点时的pH值)为_________。天冬氨酸的pK1(COOH)值为1.88,pK2(COOH)值为3.65,pK3值为9.60,其pI值为_________。
【单选题】What does 'it' refer to in the last sentence of the fourth paragraph?
A.
The waiting list to participate in the study.
D.
The anti-smoking rinse.
【判断题】新准则规定,企业不得采用先进先出法确定发出材料的成本。()
【单选题】对于发达国家来说,进行全球化采购的主要原因是( )
【简答题】谷氨酸的pK1=2.19(α-COOH)、pK2=9.67(α-NH3)、pK3=4.25(γ-COOH),PI=()。精氨酸的pK1=2.17(α-COOH)、pK2=9.04(α-NH3)、pK3=12.48(胍基),PI=()。结果保留小数点后两位。