A.32+233 B.32×233 C.32/233 D.233/32
A.112/160 B.160/120 C.56/160 D.160/56
用BaS04重量法測定碳酸鍋中SO的含量時,換算因數(shù)為()。
A.32/233 B.96/233 C.233/32 D.233/96