A.美国中部大平原雨热同期,劳动力丰富,宜发展机械种植业 |
B.威尼斯河道纵横,濒临海洋,渔业资源丰富,是耕海牧渔之地 |
C.安第斯山区海拔高,在低海拔地区适宜放牧,高海拔地区适宜发展种植业 |
D.瑞士位于阿尔卑斯山区,冬季是瑞士山区最重要的旅游季节 |
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