单项选择题
A.水丸 B.浓缩丸 C.滴丸 D.小蜜丸 E.大蜜丸
A.2.0% B.3.0% C.5.0% D.9.0% E.15.0%
A.先在浓盐酸溶液中检查2h B.先在浓盐酸溶液中检查1h C.先在磷酸盐缓冲液(pH6.8)检查1h D.先在盐酸溶液中(9→1000ml)检查2h E.先在磷酸盐缓冲液(pH6.8)检查2h
A.20min B.30min C.40min D.50min E.60min
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