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Log bridge: Quiz

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Question 1: A log bridge is a ________ that uses logs[1] that fall naturally or are intentionally felled or placed across streams.
Arch bridgeCable-stayed bridgeBridgeTruss bridge

Question 2: Such log bridges have a severely limited lifetime[3] due to soil contact and subsequent rot and wood-eating ________ infestation.
LepidopteraArthropodChelicerataInsect







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