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What are they made of, how do they work?

2007-10-31 19:13:31 · 1 answers · asked by Anonymous in Science & Mathematics Biology

1 answers

They are often made of steel beams and hydraulic pistons. You may have seen these on construction vehicles.

2007-10-31 19:30:48 · answer #1 · answered by lithiumdeuteride 7 · 0 0

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