①下调外汇存款准备金率→缴存准备金减少→美元流动性增加→人民币的汇率稳定
②下调外汇存款准备金率→外汇供求趋于平衡→人民币汇率回升→减缓人民币贬值
③下调外汇存款准备金率→美国收紧货币政策→美元加息减缓→人民币对美元升值
④下调外汇存款准备金率→人民币供大于求→人民币流动性增加→人民币逐渐升值
A.①② | B.①④ | C.②③ | D.③④ |

同类型试题

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2


y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

