Turn on the first for one min and then turn it off.8 V& `8 I. @( H6 u
Turn on the 2nd for five min and then turn it off.0 F5 z0 w+ N5 }- }' V8 x1 k
Turn on the 3rd and leave it on.; A ?+ {3 v8 \: R* g* \
And then go upstairs right away.& ~* y o) |0 E
& R4 B$ i- u, V6 n. LFind the answer by using your fingers and eyes( \. ^3 \& [0 Q# M6 _2 g1 l) 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 % I6 K9 i* U) s8 J" a$ C. J! WTurn on the first for one min and then turn it off. ; \% i. _/ i4 v m+ C u& VTurn on the 2nd for five min and then turn it off.0 M1 j) | L( @8 \2 ~5 Z
Turn on the 3rd and leave it on.1 D) E7 i& j/ _ ~
And then go upstairs right away. 7 l. r6 v) ^2 Y" x. k% r : k+ `; F4 H @4 K& MFind the answer by using ...