A.向一定量的二氧化锰固体中加入一定量的过氧化氢溶液![]() |
B.向盐酸和氯化钙的混合溶液中逐滴加入纯碱溶液至过量![]() |
C.一定温度下向一定量的某饱和氢氧化钙溶液中加入少量氧化钙![]() |
D.向等质量的镁、铝中分别加入等溶质质量分数的稀硫酸至过量![]() |

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

