Turn on the first for one min and then turn it off.* W- X% q/ O6 C1 Z
Turn on the 2nd for five min and then turn it off. ( `/ E, a' F" n0 D0 x6 V# d+ ^Turn on the 3rd and leave it on. # b' E7 K$ ~5 m) q$ g. ^And then go upstairs right away.3 i* |6 \% [& N5 E% D& m# h
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Find the answer by using your fingers and eyes / E8 l; r' p* W8 S7 Z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' s/ }0 k* [5 VTurn on the first for one min and then turn it off./ l' X6 [0 Z$ d& A/ e& M, T
Turn on the 2nd for five min and then turn it off. 2 v* @& |' H8 o) @" `6 Y" hTurn on the 3rd and leave it on. 4 I: R" r& ]2 h+ Z1 O- GAnd then go upstairs right away.' O5 t3 j' X, T0 {2 t8 w9 |
# x' d& A: K, B A( t6 g% AFind the answer by using ...