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【题目】读下面等高线地形图,完成要求。

(1)写出图中字母所在部分的地形名称:B_________,D________

(2)甲、乙两地的相对高度约__________米。

(3)甲地在乙地的________方向。

(4)如果在图示地区建造一座水库,最适合修建拦水大坝的地点是字母________处。

【答案】鞍部 陡崖 100米 西北 E处

【解析】

根据在等高线地形图上,等高线闭合且等高线数值中间高四周低则为山顶;两山顶之间相对低洼的部位为鞍部;高线闭合且等高线数值中间低四周高则为盆地;等高线向海拔低处凸为山脊;等高线向海拔高出凸为山谷;等高线重合的地方为陡崖,进行分析解答。

1)读图可得:B位于两山顶之间相对低洼的部位为鞍部,D位于等高线重合的地方为陡崖。

2)甲地的海拔是250米,乙地的海拔是150米,甲、乙两地的相对高度约100米。

3)图中没有指向标,可根据“上北下南,左西右东”判定,甲地在乙地的西北方向。

4)如果需要修筑一座水库大坝,应在E处最合适,该处位于盆地的出口处,工程量小。

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