Question: QUESTION 5 A utility worker is fixing power lines in a manhole space at a busy intersection. To avoid suffocation, a fan is used to

QUESTION 5
A utility worker is fixing power lines in a manhole space at a busy intersection. To avoid suffocation, a fan is used to supply fresh air from the surface into the manhole space. The air is routed through 20cm diameter plastic holes
 QUESTION 5 A utility worker is fixing power lines in a

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