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Microbiology: A Systems Approach 4th Edition by Marjorie Kelly Cowan
النسخة 4الرقم المعياري الدولي: 978-0073402437Microbiology: A Systems Approach 4th Edition by Marjorie Kelly Cowan
النسخة 4الرقم المعياري الدولي: 978-0073402437 تمرين 4
During sewage treatment, microbial action on a large scale first takes place in the
A) primary phase.
B) secondary phase.
C) Microbial action is not a part of sewage treatment.
D) Microbial action takes place after the secondary phase.
A) primary phase.
B) secondary phase.
C) Microbial action is not a part of sewage treatment.
D) Microbial action takes place after the secondary phase.
التوضيح
موثّق
موثّق
(b)As can be seen in the secondary phase...
Microbiology: A Systems Approach 4th Edition by Marjorie Kelly Cowan
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