Turn on the first for one min and then turn it off.1 ]! M0 X4 ]. u
Turn on the 2nd for five min and then turn it off.. z8 M5 P3 q9 Y
Turn on the 3rd and leave it on. ; N1 x9 p: C, c" QAnd then go upstairs right away., v* r" u- m% z# F% h
) B, g o i+ i7 J/ f7 N/ |) n. Q I
Find the answer by using your fingers and eyes9 J' m6 O6 r. ~+ x0 N
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 : z/ n4 P B C# y$ g3 _. h7 A
Turn on the first for one min and then turn it off.7 ?6 @; i; P0 w4 D: r9 L! i
Turn on the 2nd for five min and then turn it off.3 |* ^5 c( ^; R4 i# }
Turn on the 3rd and leave it on. 3 o' c3 t+ v1 T- mAnd then go upstairs right away. ) j6 x) {" R. t: \& z" c 6 S7 I# M9 n2 [3 ?Find the answer by using ...