Pick up the mechanical ventilation method used for tunnels from the following:-A-blowing fresh air by ducts to the face of tunnelB-exhausting foul air by ducts from the face of the tunnel and permitting fresh air through the tunnelC-blowing fresh air and exhausting foul air by ductsD-all the above.-D-all the above.

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APTITUDE CRACK · Accepted Answer

D all the above. No answer description is available.

Tunnelling

Pick up the mechanical ventilation method used for tunnels from the following:

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Tunnelling

Pick up the mechanical ventilation method used for tunnels from the following:

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For help Students Orientation Mcqs Questions

For help Students Orientation
Mcqs Questions