In a tubular filter-aid filter, cylindrical tubes are covered by socks made of __ filter cloth?

In a tubular filter-aid filter, cylindrical tubes are covered by socks made of __ filter cloth?

In a tubular filter-aid filter, cylindrical tubes are covered by socks made of __ filter cloth?




A. Dacron
B. Porous
C. Anthracite
D. Polyethylene
E. A and D






Answer: E


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