1.图中①②③④地中相对最不易发生地震的是( )
A.① | B.② | C.③ | D.④ |
A.非洲板块 | B.印度洋板块 |
C.太平洋板块 | D.美洲板块 |
A.地震发生时应争先恐后,逃命要紧 | B.地震时应乘坐电梯迅速离开 |
C.地震时应撤离到相对空旷地带 | D.地震被困后躲在卫生间墙角 |
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