

MCQOPTIONS
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1. |
The wooden poles well impregnated with creosite oil or any preservative compoundhave life |
A. | from 2 to 5 years |
B. | 10 to 15 years |
C. | 25 to 30 years |
D. | 60 to 70 years |
Answer» D. 60 to 70 years | |