Finish TradesCâu 475 / 700
Porous natural stone such as travertine or honed limestone is typically sealed before use MAINLY to accomplish what?
a.Increase its surface gloss to a mirror polish
b.Resist staining and moisture absorption
c.Change the stone's color permanently
d.Make the stone fireproof
Giải thích
A penetrating sealer reduces the stone's absorption so spills and grout do not stain the porous surface. Sealing is not primarily to add gloss (that is polishing), it does not permanently recolor the stone, and natural stone is already noncombustible so fireproofing is not the purpose.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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