Turn on the first for one min and then turn it off. - _0 K# j( v, ]4 X6 n* NTurn on the 2nd for five min and then turn it off. 5 ?' w. h% B+ ~, o+ ~- w* aTurn on the 3rd and leave it on. + g5 T0 p9 V/ M5 T/ B# p' HAnd then go upstairs right away. ; H6 J) I2 U2 v3 |. G1 C) A / V2 U+ a( M' S: H! w; M Q; OFind the answer by using your fingers and eyes* @, Z6 h" Q. I5 p
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 z& Z) U& Q7 V2 d4 ^
Turn on the first for one min and then turn it off. 8 s9 D- V2 k' vTurn on the 2nd for five min and then turn it off.6 u Q$ j" M9 X! c
Turn on the 3rd and leave it on. ( ?: Y! @. J6 u+ L8 QAnd then go upstairs right away. 2 j4 U+ `( }) ~' Y- N! c/ r$ c7 P* e) s) o: {9 q
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