Turn on the first for one min and then turn it off.1 G7 x* ]+ f$ z
Turn on the 2nd for five min and then turn it off. 9 G5 h$ f# t \) m0 ETurn on the 3rd and leave it on. 8 W6 @" I1 \+ u, f5 c. h1 g6 EAnd then go upstairs right away.; Z9 K! u/ ?" O5 H% l1 B
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Find the answer by using your fingers and eyes 8 Z9 `- M2 L1 S/ e/ v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 2 {. ?) T/ s$ i; X: NTurn on the first for one min and then turn it off. $ i6 N3 f% z: d8 `8 iTurn on the 2nd for five min and then turn it off.5 `& I, v4 v3 E0 T; z0 P! z% {- s3 u+ l
Turn on the 3rd and leave it on.. H7 _1 @2 W# k. S7 ^
And then go upstairs right away. 8 V4 t4 D H% V7 x I v7 l 1 Y& s( h6 U3 [! S! n+ b& O! gFind the answer by using ...