Turn on the first for one min and then turn it off. ) s; Y3 P3 s: @/ e( pTurn on the 2nd for five min and then turn it off./ a: p0 ~# [5 ?* v6 m! k0 }
Turn on the 3rd and leave it on. 8 g0 {! b2 p8 o7 O: Z$ y4 f0 LAnd then go upstairs right away. : v- E4 C6 ^2 Z3 q9 A # w/ _- S# n4 L% P! kFind the answer by using your fingers and eyes2 Z \* m5 F, t) l( H/ C
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/ y3 N* J' [% E7 @# y
Turn on the first for one min and then turn it off. # T5 D. p K' L( d1 p/ }- GTurn on the 2nd for five min and then turn it off. / d! l. k/ A( nTurn on the 3rd and leave it on. - ]2 G5 s" j* {# `2 OAnd then go upstairs right away. 6 k; D7 r$ ?' x& U9 Y8 _3 U1 X' C; L- [: ]8 n
Find the answer by using ...