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2,3,6,8,8,4,()A.2 B.3 C.4 D.5
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2,3,6,8,8,4,() A.2 B.3 C.4 D.5
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2,3,6,8,8,4,() A.2 B.3 C.4 D.5
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2,3,6,8,8,4,()() A.2 B.3 C.4 D.5
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3,6,8,8,4,()A.2 B.3 C.4 D.5
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正常食管内的pH值是A.2.5~4.0B.3.5~5.0C.4.5~6.0D.5.5~7.0E.6.5~8.0
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柏子养心丸中朱砂的含量占 A.2.8%B.3.8%C.4.8%D.5.8%E.6.8