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歡迎您訪問數學考題練習:如圖,有a、b、c三戶家用電路接入電表,相鄰電!

數學考題練習:如圖,有a、b、c三戶家用電路接入電表,相鄰電

更新時間:2024-01-12 16:29:54作者:貝語網校

如圖,有a、b、c三戶家用電路接入電表,相鄰電路的電線等距排列,則三戶所用電線

A.a戶最長

B.b戶最長

C.c戶最長

D.三戶一樣長

試題答案

D

試題解析

可理解為將最左邊一組電線向右平移所得,由平移的性質即可得出結論.

解答:∵a、b、c三戶家用電路接入電表,相鄰電路的電線等距排列,

∴將a向右平移即可得到b、c,

∵圖形的平移不改變圖形的大小,

∴三戶一樣長.

故選D.

點評:本題考查的是生活中的平移現象,熟知圖形平移的性質是解答此題的關鍵.

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