Turn on the first for one min and then turn it off.# c1 G% O o8 t! p3 j1 S0 o
Turn on the 2nd for five min and then turn it off. / u5 N; |4 P8 y# l3 e8 R/ _6 yTurn on the 3rd and leave it on. 2 ]' z: A0 y- N0 K* t/ KAnd then go upstairs right away.5 X. @, p5 z4 ~7 t
& v1 l' T2 v, b6 S3 | oFind the answer by using your fingers and eyes8 }2 e' s) l1 J
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 9 E- B d! @/ W: K: oTurn on the first for one min and then turn it off. ; o# J1 w9 @2 R! Z, @Turn on the 2nd for five min and then turn it off. # f( k; Z) L9 R# I6 E. GTurn on the 3rd and leave it on.# }2 R# \0 e2 t& w) x- A7 p
And then go upstairs right away." i9 n4 j9 \6 G1 q8 }7 ^0 c