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【单选题】
既可以作栓剂的基质，又可用作片剂润滑剂的是A.
硬脂酸镁
B.
滑石粉
C.
聚乙二醇4000
D.
氢化植物油
E.
微粉硅胶
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A.
针尖滑出血管外
B.
针尖斜面一半在血管内，一半在外
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A.
针尖滑出血管外
B.
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C.
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D.
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