A.降低了水的硬度和堿度 B.濾掉了懸浮物和機(jī)械雜質(zhì) C.提高了水的透明度
A.1ml溶液中所含溶質(zhì)的摩爾數(shù) B.1升溶液中所含溶質(zhì)的摩爾數(shù) C.1m3溶液中所含溶質(zhì)的摩爾數(shù)
A.NaOH B.NaCL C.NaHCO3