A.马口铁(镀锡铁)破损后在潮湿的空气中比白铁皮(镀锌铁)破损后腐蚀更快 |
B.暖气片表面刷油漆可防止金属腐蚀 |
C.铜在酸雨中发生析氢腐蚀 |
D.将水闸和惰性电极置于海水中,分别连接电源的负极和正极,采用的是外加电流的阴极保护法防腐 |
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