A.1956.8.4 B.1956.10.4 C.1957.8.4 D.1957.10.4
A.碳酸鈉 B.碳酸氫鈉 C.硫酸鈉 D.硫代硫酸鈉
A.0.38~0.76 B.0.48~0.66 C.0.38~0.66 D.0.48~0.76