Turn on the first for one min and then turn it off. : Z3 z/ P8 n% s. J STurn on the 2nd for five min and then turn it off. ( b% \! z8 A {& Q8 ? tTurn on the 3rd and leave it on. 6 h4 B! q0 t; `: x6 uAnd then go upstairs right away.. A4 s. d# ^) t
) B" d5 V, v% r0 O6 ~, L
Find the answer by using your fingers and eyes 4 I- d C4 h8 `" K. h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 ! G, O9 z, ?; n. h( Z( t! N; MTurn on the first for one min and then turn it off. & h4 I1 u4 t% P3 u2 K4 {1 LTurn on the 2nd for five min and then turn it off.3 i2 p& U$ G- v. K( u
Turn on the 3rd and leave it on.! e k) E2 R' d; n4 S+ F( M. z2 K
And then go upstairs right away. 3 k, e8 s6 W3 d& Q* @- }; X. `4 }. b y
Find the answer by using ...