Turn on the first for one min and then turn it off. + G. I, x! x+ f& J. iTurn on the 2nd for five min and then turn it off. . Z) d6 C0 w" N4 ~" v4 m. D- F# E1 }Turn on the 3rd and leave it on. 9 a0 z3 P9 A& }And then go upstairs right away. 4 i. R1 A3 {6 M: G+ s6 x 9 L$ V0 j0 g/ @+ `5 oFind the answer by using your fingers and eyes ( @# a9 g5 o$ 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 8 e" z: R J1 i. N: l h* Q2 zTurn on the first for one min and then turn it off., s4 a- s0 ~$ k l1 x
Turn on the 2nd for five min and then turn it off. ) l2 z' ?( W' Z `* M8 pTurn on the 3rd and leave it on. . J- Z5 O; r3 ~# ~/ w4 R' oAnd then go upstairs right away. , X, @* b& b) d- T 5 K" M, c ?: bFind the answer by using ...