Turn on the first for one min and then turn it off. 5 _. B% \( k0 e1 w- ZTurn on the 2nd for five min and then turn it off.3 l5 [' T) i: A8 \) V% ?9 W# k
Turn on the 3rd and leave it on.& T7 Y \6 N; Y' A9 l! f1 Y: ^
And then go upstairs right away. P, J. z8 H, @# R% q6 ]% B3 h : `* \: M& }5 ?: m* S- `! |Find the answer by using your fingers and eyes & Q% G2 S! F2 U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 ; E, G: X2 D- @8 Z7 `, u
Turn on the first for one min and then turn it off.) j$ ?% K5 l* g! k( F+ H: G; q
Turn on the 2nd for five min and then turn it off.. `# d) o% }) }5 J& ?) N
Turn on the 3rd and leave it on., A- y# v) u9 b5 `& B
And then go upstairs right away. $ P% W3 J% s9 f4 \ & Q: M7 W! n- C$ _Find the answer by using ...