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Pick up the incorrect statement from the following for allowing workers to enter sewers_______________?
Civil Engineeringmedium
AThe particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes
BProper tests for the presence of poisonous gases must be carried out
The men entering the manhole should be advised to smoke in the sewer
DWarning signals should be erected
Correct Answer: C. The men entering the manhole should be advised to smoke in the sewer
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