A. only up holes
B. only down holes
C. horizontal or up holes
D. horizor„al, down or up holes
- Tunnel Engineering
- Tunnel Engineering
IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG.
PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION.
A. only up holes
B. only down holes
C. horizontal or up holes
D. horizor„al, down or up holes
IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG.
PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION.