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非常口の誘導灯が緑色なのは、炎の赤色と補色の関係にあるから
色盲
だと困りそう
#非常口
#色
#赤
#緑
Created
a few seconds ago
by
Toshiyuki Masui
Updated
a few seconds ago
by
Toshiyuki Masui
Views: 1
Page rank: 0
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