In _________________ floors, the flag stones are used in the two layers.
A. Double flagstones floors
B. Single flagstones floors
C. Triple flagstones floors
D. Filler joists timber floors
Answer:A
In _________________ floors, the flag stones are used in the two layers.
A. Double flagstones floors B. Single flagstones floors C. Triple flagstones floors D. Filler joists timber floors