Turn on the first for one min and then turn it off. E) c6 C Z3 X5 Z
Turn on the 2nd for five min and then turn it off.; B3 d7 g5 {% s
Turn on the 3rd and leave it on. 1 J2 P5 C6 I/ D3 G* Y/ lAnd then go upstairs right away. " [% a* M: d+ O# ~ , ~* Q/ |4 L/ d. U/ h. X8 FFind the answer by using your fingers and eyes 9 ^( d' W4 y2 F- W. V; W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 o, r7 J) N' B# F' U- G: k' gTurn on the first for one min and then turn it off.9 W* H: @$ b5 V
Turn on the 2nd for five min and then turn it off.: L& n+ D! W' R1 t5 A1 {: y
Turn on the 3rd and leave it on.3 d4 |+ R) D7 O; c4 t: F2 z9 S4 L
And then go upstairs right away. j0 \& C' c! b6 t0 r2 K- O- M ! V+ U) [. |8 E; V/ ^Find the answer by using ...