Turn on the first for one min and then turn it off. - L! V" q' O! I. o+ C( sTurn on the 2nd for five min and then turn it off. ; T i% N. p, @0 ?3 R: LTurn on the 3rd and leave it on.- |( x! C# q \7 m/ {4 G$ J2 P. |
And then go upstairs right away. * v# W# J7 Z3 y+ r H4 q. F* {2 {, x8 A) G; L
Find the answer by using your fingers and eyes 6 ~6 o8 M; H: _ ~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 ) K/ i/ V k$ C% ]( c) b+ ]
Turn on the first for one min and then turn it off. - L* G% m" D9 {4 s9 i, q7 ETurn on the 2nd for five min and then turn it off.$ x/ q' Y! S3 z. {( b- Z
Turn on the 3rd and leave it on. & d* b* N: s( \+ F+ _) R" \4 ?/ ?And then go upstairs right away. $ o8 O# {! e+ U, x- M! V5 W: Y; b+ c& ]- j - [, g$ J7 F/ H$ F- R/ }4 t0 ?Find the answer by using ...