Turn on the first for one min and then turn it off. 6 N J7 z9 C" @0 j2 l. \9 aTurn on the 2nd for five min and then turn it off.+ ~- ?$ k5 C1 m. G& i3 ^
Turn on the 3rd and leave it on.! D Q' K; ~" o; }
And then go upstairs right away. ' p! _! n* n8 m0 F- o6 S ; z1 q( [4 r6 r+ m. sFind the answer by using your fingers and eyes8 X; i/ j: L9 ]4 n* u% T" T
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 : U) `" Z6 U" M2 _Turn on the first for one min and then turn it off." o) j7 I6 c j7 M d: N
Turn on the 2nd for five min and then turn it off.- t. b/ j7 Y" Y: [9 x8 i
Turn on the 3rd and leave it on.8 r" b/ {: q+ w5 `. r; V" g
And then go upstairs right away. - L6 o# E, B4 h4 [ 2 k- l! T1 |+ Q6 pFind the answer by using ...