1.导致冰岛火山灰蔓延到欧洲上空的气压带和气流是
A.副热带高气压带和西风 | B.副极地低气压带和西风 |
C.副热带高气压带和东北风 | D.副极地低气压带和东北风 |
A.大气圈一水圈、生物圈一岩石圈 | B.岩石圈一大气圈一水圈、生物圈 |
C.水圈、生物圈一大气圈一岩石圈 | D.水圈、生物圈一岩石圈一大气圈 |
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