Turn on the first for one min and then turn it off.# V# R- i( h i1 h
Turn on the 2nd for five min and then turn it off. # L, P# w% E4 D4 O0 R4 C$ eTurn on the 3rd and leave it on. & q1 g7 A: ]! t' qAnd then go upstairs right away. ) v% M' n: W% W- ^1 Z% t' l 4 r) n) Y- v9 S$ [" \1 {Find the answer by using your fingers and eyes- i' D- x: {" f2 D. I' c4 ^
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 y: v1 t7 |' x! }8 i$ E E
Turn on the first for one min and then turn it off.4 r: R9 N6 ^8 }% n6 \
Turn on the 2nd for five min and then turn it off.% G5 G: n% r0 F3 x% N
Turn on the 3rd and leave it on. 2 i* `. Z3 z' N# G# S0 I @4 pAnd then go upstairs right away. ; X0 d8 A9 }) j 8 k' K) s6 Q9 x. s" ZFind the answer by using ...