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【題目】圖幅相同的甲乙兩圖。甲圖比例尺是乙圖的兩倍:

A.乙圖表示范圍廣,內容粗略B.乙圖表示范圍小,內容詳細

C.乙圖表示范圍小,內容粗略D.乙圖表示的地圖面積是甲圖的2倍

【答案】A

【解析】

比例尺是表示圖上一條線段的長度與地面相應線段的實際長度之比。公式為:比例尺=圖上距離與實際距離的比。比例尺有三種表示方法:數值比例尺、圖示比例尺和文字比例尺。一般來講,大比例尺地圖,內容詳細,幾何精度高,可用于圖上測量。小比例尺地圖,內容概括性強,不宜于進行圖上測量。

相同圖幅,比例尺越小表示范圍越大,內容越簡略;比例尺越大表示范圍越小,內容越詳細。圖幅相同的甲乙兩圖,甲圖比例尺是乙圖的兩倍,甲圖比例尺大,表示的范圍小,內容詳細;乙圖表示的地圖面積是甲圖的4倍。故選:A

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