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【单选题】
对于粘在义齿组织面不易去净的石膏,可用下列何种溶液浸泡24小时去除干净A.
3％碳酸氢钠溶液
B.
30％碳酸氢钠溶液
C.
3％枸橼酸钠溶液
D.
30％枸橼酸钠溶液
E.
3％氢氟酸溶液
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