下图示意京津冀城市群规划的双“C”字形区域发展格局。读下图,完成下面小题。
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1.该城市群濒临的海洋是( )
A.渤海 | B.黄海 | C.东海 | D.南海 |
A.石油化工 | B.电子信息 | C.金属冶炼 | D.纺织服装 |
A.港口众多 | B.生态良好 | C.矿产丰富 | D.地形平坦 |
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同类型试题
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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
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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
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