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how does a crane used in bulding construction gets higher and higher?

2006-07-26 05:58:40 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science

1 answers

it builds itself on an as-needed basis and and de-constructs when the building is completed

2006-07-26 06:37:32 · answer #1 · answered by Ralph 5 · 0⤊ 0⤋

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