Turn on the first for one min and then turn it off.: }+ u. C; g! c; h- n ?' `: |
Turn on the 2nd for five min and then turn it off.; b$ q7 n7 l, {
Turn on the 3rd and leave it on.1 F) ~7 F8 ^7 C* \ p6 U' X" {; M
And then go upstairs right away. ' w/ ]/ v* \ q+ n+ k1 i; m" {+ r 3 H# u- |% A2 o# zFind the answer by using your fingers and eyes& x& t5 ^3 V# v- B# g/ R6 l
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 % s: g: t+ J, L6 o3 p* e' q, oTurn on the first for one min and then turn it off." y7 _: J$ X. {4 ?
Turn on the 2nd for five min and then turn it off. & W5 [# s, d& V9 r, ATurn on the 3rd and leave it on. % D8 c/ }5 M3 @And then go upstairs right away. " M2 n( f% d8 j, r& b. ~$ [& ~& [2 w
Find the answer by using ...