At present, the lentils of _________ are widely used to span the openings for doors, windows, etc. in a structure.
A. Timber
B. Wood
C. RCC
D. Cement
Answer:C
At present, the lentils of _________ are widely used to span the openings for doors, windows, etc. in a structure.
A. Timber B. Wood C. RCC D. Cement