Turn on the first for one min and then turn it off. 8 H3 ~) V( u7 j; \6 GTurn on the 2nd for five min and then turn it off. , d5 i7 n6 x; h2 KTurn on the 3rd and leave it on. ) y7 |/ ~5 ]( u8 f5 H% RAnd then go upstairs right away. ! ?: @" T8 K$ U! X7 q$ m7 X1 B% b/ W+ V. T
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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 ; J) C4 q' I2 T. i& ^8 _ {1 i3 ]
Turn on the first for one min and then turn it off. & C8 J6 p! ?' P2 {Turn on the 2nd for five min and then turn it off. $ U% d1 t) _% L% WTurn on the 3rd and leave it on. * B# D+ |2 O1 M5 j. W# v/ BAnd then go upstairs right away.5 @( E+ J/ l' l7 R4 g9 G) {
8 i) V6 I" }3 Q0 \
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