Turn on the first for one min and then turn it off. - a, R+ m. {4 I1 w( M; Q8 KTurn on the 2nd for five min and then turn it off. 6 V( y& Y& J8 B+ c8 \; r; f0 tTurn on the 3rd and leave it on. ( Q n( f3 }3 _And then go upstairs right away.. `, v- L V1 u
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Find the answer by using your fingers and eyes. F" b( {/ o0 a6 ]: F
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 2 q" c j# K! \$ tTurn on the first for one min and then turn it off.8 y/ C; N3 R' x
Turn on the 2nd for five min and then turn it off. ^) ~0 V! u5 W( o+ O/ E. j$ h( [; PTurn on the 3rd and leave it on. ) l2 f# z6 g: @% rAnd then go upstairs right away. Q" r5 S8 g9 q% K( \5 O8 I0 |3 w' \7 q" S
Find the answer by using ...