细菌约占粪便干重的多少A.2/3B.1/5C.1/2D.1/4E.1/3

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问题 细菌约占粪便干重的多少A.2/3
B.1/5
C.1/2
D.1/4
E.1/3

选项 A.2/3
B.1/5
C.1/2
D.1/4
E.1/3

答案 E

解析
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