Turn on the first for one min and then turn it off. : G0 W6 k; G s% H& o* G* WTurn on the 2nd for five min and then turn it off.- l7 Q5 E; {2 j( P$ y; d
Turn on the 3rd and leave it on.: L. Q* l+ K7 y+ {+ X
And then go upstairs right away.0 e/ h: l8 y6 \& e; C1 E9 y% n" \
4 W" z6 |# D- U( J9 \6 R' Q4 u
Find the answer by using your fingers and eyes 8 a: M n1 J2 s# S* S6 L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 X1 }( m% J/ Q. ?
Turn on the first for one min and then turn it off. ) o% ]) U6 T! ?. A; RTurn on the 2nd for five min and then turn it off.4 _! o# M7 d3 \9 {, H! O. a o5 w% S
Turn on the 3rd and leave it on. 7 `8 ?. S" K/ R# [) S4 EAnd then go upstairs right away. . k* _- b$ u' p; t0 r3 y& d7 U8 `: y! R
Find the answer by using ...