读“我国主要河流分布示意图”,完成下面小题。
1.①②③④四条河流中,我国最长的内流河的是( )
A.① | B.② | C.③ | D.④ |
A.① | B.② | C.③ | D.④ |
A.②>①>③ | B.②>③>① |
C.③>②>① | D.③>①>② |
A.a和c河段 | B.b和d河段 |
C.c和d河段 | D.b和c河段 |
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