读我国部分省级行政区简图,完成下面小题。
1.当哈尔滨晨光熹微时,乌鲁木齐依然夜色深重,这种现象产生的原因是我国( )
A.东西跨度大 | B.南北跨度大 |
C.海陆兼备 | D.位于北温带 |
A.与朝鲜接壤 | B.是沿海省区 |
C.与4个国家相邻 | D.简称是内蒙古 |
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