Turn on the first for one min and then turn it off. & V6 z+ Z5 e4 A u$ U3 Z! x& l! VTurn on the 2nd for five min and then turn it off.) z" _; X+ N* V" ^8 S! P6 i
Turn on the 3rd and leave it on. : G! n6 c0 v7 U7 R4 ZAnd then go upstairs right away.) Z/ G/ h* q) P6 `/ q
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Find the answer by using your fingers and eyes2 u8 c" A& D3 b+ F. R$ @5 }5 k
这只是一个智力问题,不象是电工问题。
原帖由 老警察 于 2009-1-16 07:12 发表 7 I% Z; R7 D; R/ ]+ D
Turn on the first for one min and then turn it off. 8 D' ?: d4 `7 X0 GTurn on the 2nd for five min and then turn it off. * g' o9 X. n% j4 [Turn on the 3rd and leave it on. 6 h) u8 W; g" ^+ i" U- dAnd then go upstairs right away.+ S( _6 g! x2 d& ]7 `
0 {3 I9 h& z! L. E& N3 nFind the answer by using ...