Moderate
The wooden poles well impregnated with creosite oil or any preservative compound have life_____________?
Correct answer: C. 25 to 30 years
- A. from 2 to 5 years
- B. 10 to 15 years
- C. 25 to 30 years
- D. 60 to 70 years
Explanation
Creosote or preservative treatment protects wooden poles against moisture, fungi and insects, extending their service life to roughly 25 to 30 years. Untreated wood would normally deteriorate much sooner.
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