Which one of the following method is not suitable for tunneling the soft ground?
ALinear plate method
BCompressed air method
CDrift method
DNeedle beam method
ALinear plate method
BCompressed air method
CDrift method
DNeedle beam method
Related Questions:
Which of the following is not the use of bleaching powder?
(i) to make drinking water free from germs
(ii) in soda-acid fire extinguishers
(iii) as an oxidising agent in many chemical industries
(iv) for baking cakes