菌种真空冻干保藏时,保护剂应加在 A.冻干前 B.冻干后 C.冻干中 D

恬恬2020-05-20  16

问题 菌种真空冻干保藏时,保护剂应加在A.冻干前B.冻干后C.冻干中D.细菌生长时E.密封时

选项

答案A

解析
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