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问题

In order to culture and propagate enough bacteria to treat the body and galley wastes____A


In order to culture and propagate enough bacteria to treat the body and galley wastes____

A.a new bacteria colony should be put into the plant in advance

B.the disinfection chemicals should be always used

C.the air blower should be started and keep running in advance

D.the nutrient for bacteria should put into plant in advance

请帮忙给出正确答案和分析,谢谢!

参考答案
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