Turn on the first for one min and then turn it off. / W A4 ?0 h+ A6 ?2 p$ i. N ^1 R: gTurn on the 2nd for five min and then turn it off. : Z( N2 X7 X+ U" nTurn on the 3rd and leave it on.; p# t4 n$ ^: B( b( |; \# D9 z1 Y4 Q
And then go upstairs right away.) H* W0 R \4 {( Y5 Z
0 Y/ k4 w! ^4 N! D6 F' sFind the answer by using your fingers and eyes h# Z J3 w/ C5 {) W V8 O. }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 3 V! }9 g5 d' CTurn on the first for one min and then turn it off. % L- ?. ]( K/ f9 p0 }Turn on the 2nd for five min and then turn it off.- J' P% P! t- [* {$ ^4 d2 s
Turn on the 3rd and leave it on. ) c1 }6 N$ {+ n; W% _0 LAnd then go upstairs right away. + M8 t7 C0 z; o0 f1 G0 j; R1 Z - Y3 Z0 z7 ^3 aFind the answer by using ...