Turn on the first for one min and then turn it off. 9 l$ d# {% t' M' \/ k3 x* S- bTurn on the 2nd for five min and then turn it off. ; _4 V7 Q, S: ?7 D1 R6 R& L7 W4 NTurn on the 3rd and leave it on. " B* Q4 o6 P/ z0 y$ t/ cAnd then go upstairs right away. , I2 u/ P. ~9 x( T% |4 \7 L! X" J# `" S
Find the answer by using your fingers and eyes Q! ~6 f" C! X2 m! c: ? u
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 9 Q( c% b5 P4 ]2 T% I6 s
Turn on the first for one min and then turn it off.: u" M) K4 Z" }1 |
Turn on the 2nd for five min and then turn it off.0 _0 X! f5 U' s& S; \
Turn on the 3rd and leave it on. 7 P: U) e8 [6 H3 Q" ]* C KAnd then go upstairs right away. ! g3 K7 ~( j- B1 ~, A 7 p! t+ B# J. oFind the answer by using ...