Question:
Which one of the following is used in trickling filter?
filtration process | |
biological action | |
none of a or b | |
both a and b | |
both a and b |
Answer:
both a and b
Last Updated:
08/11/2021 - 09:25
filtration process | |
biological action | |
none of a or b | |
both a and b | |
both a and b |