Turn on the first for one min and then turn it off. / L# \2 X' |; @ t+ S' JTurn on the 2nd for five min and then turn it off. 5 s4 |/ n& n% Q' _- sTurn on the 3rd and leave it on. , X# w- h0 i* UAnd then go upstairs right away.9 e9 N2 L$ E: z
$ o, V2 N% O2 EFind the answer by using your fingers and eyes , G4 ?% C3 m& _! e0 q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 1 r8 ~& z# a7 S7 YTurn on the first for one min and then turn it off.+ _0 }) r# `$ {* M
Turn on the 2nd for five min and then turn it off." @" l3 r: H' e) d
Turn on the 3rd and leave it on.0 Z9 M: D$ a/ X# t: v- D a
And then go upstairs right away. 0 \8 t9 S& `5 s9 f. L3 R, x) e) E8 q2 k5 [9 w" _6 `% N
Find the answer by using ...