Turn on the first for one min and then turn it off. $ [ b1 a7 R/ n: D+ ZTurn on the 2nd for five min and then turn it off.. Y0 Q# t7 ` j: f& d
Turn on the 3rd and leave it on.4 y7 h8 p0 @+ }& I0 K3 m% {
And then go upstairs right away.! c% a% x J/ q6 _
' f d" N5 I' P S0 D
Find the answer by using your fingers and eyes 0 S, V1 O( H7 [! @1 g7 a3 m- \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 6 @( _8 n/ q0 q- h: m; p/ OTurn on the first for one min and then turn it off.1 A0 W( A" M% o3 q' f
Turn on the 2nd for five min and then turn it off. 7 }8 Y/ P* D+ W8 L q; y7 aTurn on the 3rd and leave it on. 1 T: L) }: c. [And then go upstairs right away. * F1 f% ]1 p: q8 H* e* O! _ w! ~# q7 ^$ m; J
Find the answer by using ...