Turn on the first for one min and then turn it off. 2 H+ C5 Q: u) T' F. x, Z- NTurn on the 2nd for five min and then turn it off. ( \0 O; W: T! k0 K* dTurn on the 3rd and leave it on. 5 z' v4 p+ r% m/ U SAnd then go upstairs right away. 1 i: z! r9 p. E / [ _; _9 v8 w4 O5 dFind the answer by using your fingers and eyes " b+ I% r1 d8 b4 o: i5 B% a' e5 X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 ' l) m8 O- }3 ?1 R/ o+ L
Turn on the first for one min and then turn it off. h/ d# ` m. s. E
Turn on the 2nd for five min and then turn it off. 6 M" m5 E( |+ o3 A0 |Turn on the 3rd and leave it on.5 c2 ? _( ?4 K% t/ Y; X0 v# Q9 ~9 \
And then go upstairs right away.% ?) @/ _' R( p7 U6 Q2 }; b5 [
; o, p$ @& e( c, c3 b) Y
Find the answer by using ...