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发表于 2009-1-16 17:55
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原帖由 老警察 于 2009-1-16 07:12 发表 , V# y, _" t0 b
Turn on the first for one min and then turn it off.
, |, l/ E, ~" TTurn on the 2nd for five min and then turn it off.
5 S6 @; \+ S+ |( A* E& G( v( }Turn on the 3rd and leave it on.
. n% v- H. V0 i OAnd then go upstairs right away.
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. |4 R6 \4 t# B) ^, G; f/ ^Find the answer by using ...
0 m6 o* M' \9 Z2 D: J+ V2 {# \好智力,赞一下 |
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