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← HistoryWhich risk increases when Inca suspension bridge cables experience prolonged moisture exposure?
A)Cable load-bearing capacity reduces✓
B)Anchorage stone fracture strengthens
C)Decking board surface hardens
D)Rope fiber elongation increases
💡 Explanation
The cable's capacity reduces due to microbial degradation of ichu grass, leading to decreased tensile strength because biodegradation breaks down fiber bonds; therefore the bridge is weaker, rather than stronger, in those sections.
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