湿地具有巨大的环境功能和效益,被称为“地球之肾”。我国是一个湿地大国,青藏地区和东北三省都有大面积的湿地分布。
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(1)甲图中①处的铁路线是
(2)青藏地区天然草场广布,适宜发展
(3)青藏地区海拔较高,东北三省纬度较高,两地耕作制度都主要为一年
(4)从甲图中看出,湿地分布在青海省,有“中华水塔”之称的
(5)乙图中②处山脉是
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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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