Turn on the first for one min and then turn it off. ' M+ G% W; X1 b0 ], \' GTurn on the 2nd for five min and then turn it off. 0 o. f7 O. b3 c" w4 f; F' R5 r/ Y& P: fTurn on the 3rd and leave it on.* l( c1 |/ t" B! e
And then go upstairs right away. 5 l7 R- F" {( d2 q2 S# B 3 C, g- N$ i1 yFind the answer by using your fingers and eyes + g/ E; v" w0 s! Q3 k# {) x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 $ ~' p0 }8 h/ s5 c% d f% r8 z5 j
Turn on the first for one min and then turn it off. + D7 N+ ^# u$ YTurn on the 2nd for five min and then turn it off.! T+ a- Q" e/ o
Turn on the 3rd and leave it on. 2 S$ @6 V; M6 j4 D0 m7 J: EAnd then go upstairs right away. " f2 [3 m9 \/ Q6 y% y + `* A" c( e( L" |" Q7 [9 R4 PFind the answer by using ...