Using the notation Pt to designate this period's price level and Pt-1 to designate last period's price level, the formula for measuring the inflation rate from last period to this period is A: [(Pt - Pt - 1) / Pt] × 100. B: [(Pt -1 - Pt) / Pt - 1] × 100. C: [(Pt - Pt - 1) / Pt - 1] × 100. D: [(Pt -1 - Pt) / Pt] × 100.
Using the notation Pt to designate this period's price level and Pt-1 to designate last period's price level, the formula for measuring the inflation rate from last period to this period is A: [(Pt - Pt - 1) / Pt] × 100. B: [(Pt -1 - Pt) / Pt - 1] × 100. C: [(Pt - Pt - 1) / Pt - 1] × 100. D: [(Pt -1 - Pt) / Pt] × 100.
下列电池中电动势E最大的是 A: Pt | H2 (2 pø) | H+ (a = 1) || H+ (a = 1) | H2 (pø) | Pt B: Pt | H2 (pø) | H+ (a = 1) || H+ (a = 0.5) | H2 (pø) | Pt C: Pt | H2 (pø) | H+ (a = 1) || H+ (a = 1) | H2 (pø) | Pt D: Pt | H2 (2 pø) | H+ (a = 1) || H+ (a = 0.5) | H2 (pø) | Pt
下列电池中电动势E最大的是 A: Pt | H2 (2 pø) | H+ (a = 1) || H+ (a = 1) | H2 (pø) | Pt B: Pt | H2 (pø) | H+ (a = 1) || H+ (a = 0.5) | H2 (pø) | Pt C: Pt | H2 (pø) | H+ (a = 1) || H+ (a = 1) | H2 (pø) | Pt D: Pt | H2 (2 pø) | H+ (a = 1) || H+ (a = 0.5) | H2 (pø) | Pt
线性规划问题的最优基为B,常数项为b,基变量的目标系数为CB,则该问题的最优解为( ) A: B^-1b B: CBB^-1b C: bB^-1 D: CBB^-1
线性规划问题的最优基为B,常数项为b,基变量的目标系数为CB,则该问题的最优解为( ) A: B^-1b B: CBB^-1b C: bB^-1 D: CBB^-1
将反应H2(pθ)+1/2O2(pθ)= H2O(l) 设计成电池,下列正确的是( ) A: Pt | H2(pθ)| H+(α)| O2(pθ)| Pt B: Pt | O2(pθ)| OH-(α)| H2(pθ)| Pt C: Pt | O2(pθ)| OH -(α1)|| H+(α2)| H2 (pθ)| Pt D: Pt | H2(pθ)| H+(α1)|| OH -(α2)| O2(pθ)| Pt
将反应H2(pθ)+1/2O2(pθ)= H2O(l) 设计成电池,下列正确的是( ) A: Pt | H2(pθ)| H+(α)| O2(pθ)| Pt B: Pt | O2(pθ)| OH-(α)| H2(pθ)| Pt C: Pt | O2(pθ)| OH -(α1)|| H+(α2)| H2 (pθ)| Pt D: Pt | H2(pθ)| H+(α1)|| OH -(α2)| O2(pθ)| Pt
标准氢电极是指: A: Pt(s)∣H2[p = 100kPa]∣OH-(a=1) B: Pt(s)∣H2[p = 101.325kPa]∣OH-(a=1) C: Pt(s)∣H2[p = 100kPa]∣H+ (a=1) D: Pt(s)∣H2[p = 101.325kPa]∣H+(a=1)
标准氢电极是指: A: Pt(s)∣H2[p = 100kPa]∣OH-(a=1) B: Pt(s)∣H2[p = 101.325kPa]∣OH-(a=1) C: Pt(s)∣H2[p = 100kPa]∣H+ (a=1) D: Pt(s)∣H2[p = 101.325kPa]∣H+(a=1)
标准氢电极指的是() A: Pt ∣ H(P = P)∣OH(a=1) B: Pt ∣ H(P=P)∣H(a=1) C: Pt ∣ H(P=P)∣H(a=10) D: Pt ∣ H(P=P)∣OH(a=10)
标准氢电极指的是() A: Pt ∣ H(P = P)∣OH(a=1) B: Pt ∣ H(P=P)∣H(a=1) C: Pt ∣ H(P=P)∣H(a=10) D: Pt ∣ H(P=P)∣OH(a=10)
标准氢电极指的是: A: Pt | H2(PH2 = Pq)| OH-(a=1) B: Pt | H2(PH2= Pq)| H+(a=1) C: Pt | H2(PH2= Pq)| H+(a=10-7) D: Pt | H2(PH2= Pq)| OH-(a=10-7)
标准氢电极指的是: A: Pt | H2(PH2 = Pq)| OH-(a=1) B: Pt | H2(PH2= Pq)| H+(a=1) C: Pt | H2(PH2= Pq)| H+(a=10-7) D: Pt | H2(PH2= Pq)| OH-(a=10-7)
标准氢电极指的是() A: Pt ∣ H(P = P)∣OH(a=1) B: Pt ∣ H(P=P)∣H(a=1) C: Pt ∣ H(P=P)∣H(a=10) D: Pt ∣ H(P=P)∣OH(a=10)
标准氢电极指的是() A: Pt ∣ H(P = P)∣OH(a=1) B: Pt ∣ H(P=P)∣H(a=1) C: Pt ∣ H(P=P)∣H(a=10) D: Pt ∣ H(P=P)∣OH(a=10)
【4.4】标准氢电极是 。 A: Pt,H2 ( pθ)│OH (a OH = 1) B: Pt,H2 ( pθ)│OH (aOH =10-7) C: Pt,H2 ( pθ)│H+( aH +=10-7) D: Pt,H2 ( pθ)│H+(aH += 1)
【4.4】标准氢电极是 。 A: Pt,H2 ( pθ)│OH (a OH = 1) B: Pt,H2 ( pθ)│OH (aOH =10-7) C: Pt,H2 ( pθ)│H+( aH +=10-7) D: Pt,H2 ( pθ)│H+(aH += 1)
写出下列电池中各个电极反应和电池反应,(1)(-)Pt|H2(p1)|HCl(c)|Cl2(p2)|Pt(+)(2)(-)Pt∣Cu2+,Cu+‖Fe3+,Fe2+∣Pt(+)
写出下列电池中各个电极反应和电池反应,(1)(-)Pt|H2(p1)|HCl(c)|Cl2(p2)|Pt(+)(2)(-)Pt∣Cu2+,Cu+‖Fe3+,Fe2+∣Pt(+)