Turn on the first for one min and then turn it off. 2 G# V4 |8 H& w1 X& Z$ K5 `Turn on the 2nd for five min and then turn it off.$ p$ |" z+ I. l. [ R1 H
Turn on the 3rd and leave it on.; f- o0 N- k0 C8 e/ Y% K
And then go upstairs right away.7 u; m/ `9 Y6 K) J) t
6 l* j) ]2 G# F6 |Find the answer by using your fingers and eyes& e& U( ^: C3 q6 W) @- q) d- o
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 2 D9 |4 Q; i# dTurn on the first for one min and then turn it off. R$ a+ [/ u S5 D0 m8 k# S9 l" NTurn on the 2nd for five min and then turn it off.# h0 H- X( g j% Q
Turn on the 3rd and leave it on.3 J1 R% I' \6 {: @
And then go upstairs right away.! s" Q/ G" s* b8 O; j. c
( M7 l/ B( T( [4 z
Find the answer by using ...