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(1)黄河发源于巴颜喀拉山脉,最终注入A
(2)图中C
(3)探究黄河“地上河”的形成过程,请将代表下列内容的序号填入图中的空白方框内(每个序号限填一次)。
①流经黄土高原 ②河堤决口,泛滥成灾 ③河床抬高,形成“地上河”
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(4)黄河上游有龙羊峡、刘家峡等水电站,请分析其水能资源丰富的原因。
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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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