1.图示区域最突出的自然环境特征是
A.干旱 | B.高寒 | C.湿热 | D.冷湿 |
A.荒漠草原→草原→荒漠 | B.荒漠→荒漠草原→草原 |
C.草原→荒漠→荒漠草原 | D.草原→荒漠草原→荒漠 |
A.纬度位置 | B.海陆位置 | C.地形因素 | D.人类活动 |
A.种植业 | B.畜牧业 | C.林业 | D.渔业 |
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