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【单选题】
细菌的营养作用是由菌体表面的扩散作用完成的，与扩散作用的强度无关的因素是
A.
细菌的细胞膜的渗透性
B.
细胞内外营养物质浓度的差异
C.
细菌的布朗运动
D.
细胞内营养物质转化的速度
E.
营养物质是水溶性或脂溶性
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相关题目：
【单选题】Thanks for inviting me _______ your birthday party.
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in
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to
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