Turn on the first for one min and then turn it off.- A$ I3 c5 N( W& K" e
Turn on the 2nd for five min and then turn it off.7 ^4 P$ }# y% F4 b/ c" A8 |
Turn on the 3rd and leave it on.' w# Z) ~1 e5 i2 O0 |& q
And then go upstairs right away. $ Q% X$ j) d* ` + S- J' i+ l. m1 T# B/ eFind the answer by using your fingers and eyes- O8 m3 Z2 v) \, l3 q, _& O& ]7 N
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 D( B3 N* w# S X) L* k9 d; @Turn on the first for one min and then turn it off. l( ?0 H( U4 MTurn on the 2nd for five min and then turn it off.& O( ?& U& q1 R' s& T' [* }# h
Turn on the 3rd and leave it on. , a5 F/ |( `4 eAnd then go upstairs right away. ) f- g# |0 v+ ~* m3 {0 f* h/ R8 [ ) e3 A w3 F, ]( dFind the answer by using ...